There are 172 car parts that start with the letter P. From Paddle Shifter to Purge Valve Solenoid. Car parts refer to the various components that make up a vehicle, each playing a crucial role in its overall operation and performance. These parts can range from essential functional components like engines and transmissions, to auxiliary parts such as belts and hoses. The proper maintenance and timely replacement of car parts are vital for ensuring vehicle safety, efficiency, and longevity. With advancements in technology, many car parts now include electronic components, enhancing their functionality and enabling features such as automated driving systems and improved infotainment options.

An interesting fact about car parts is that many vehicles contain around 30,000 different parts, and the automotive industry is continuously evolving with new materials and technologies. For instance, lightweight composites are increasingly being used to improve fuel efficiency, while high-strength steel remains a staple for structural components due to its durability.

Here’s what each of the columns in the table means:

Function: A brief description of what the car part does within the vehicle system.

Maintenance Interval (months): The recommended time period after which the part should be inspected or replaced, measured in months.

Replacement Cost (USD): An estimate of the average monetary cost incurred when replacing the part, expressed in U.S. dollars.

Description: A detailed explanation of the car part, including its significance, materials, and placement in the car’s architecture.

Car parts That Start With P

Car parts function maintenance interval (months) replacement cost (USD)
Paddle Shifter Allows manual gear selection in automatic transmission vehicles 24 50-200
Paddle Shifter Extension Extends the reach of the paddle shifter for easier access 12 25
Panoramic Sunroof Motor Powers the opening and closing of a panoramic sunroof 36 350
Park Assist Camera Provides a rearview camera feed to assist with parking and maneuvering 24 100
Park Assist Sensor Detects obstacles and provides guidance to the driver during parking maneuvers 24 50-200
Park Assist Sensors Use ultrasonic technology to detect obstacles near the vehicle during parking maneuvers and alert the driver. 12 100-300
Park Assist Sensors, Front Ultrasonic sensors that detect obstacles in front of the vehicle during parking 24 75
Park Assist Sensors, Rear Ultrasonic sensors that detect obstacles behind the vehicle during parking 24 75
Park Brake Cable, Rear Provides a mechanical connection to apply the rear parking brakes 48 45
Park Lock Solenoid Engages the parking pawl to lock the transmission in ‘Park’ when the shifter is moved into that position. N/A 50-150
Park Pawl Locks the transmission in park position when the vehicle is stationary, preventing it from rolling 60 50-200
Park Position Switch Signals the transmission control module when the vehicle is in park gear 36 25-50
Parking Assist Camera Provides a rear view image to the driver when reversing the vehicle 24 100-300
Parking Brake Applies brake force to rear wheels to prevent vehicle from moving when parked 6 25
Parking Brake Actuator Applies the parking brake when engaged. 60 $75-$200
Parking Brake Adjuster Adjusts the tension of the parking brake cable to ensure proper braking force 12 25-50
Parking Brake Assembly Applies friction to the rear wheels to hold the vehicle stationary when parked 36 50-150
Parking Brake Cable Connects the parking brake lever to the rear brake mechanism, allowing the driver to engage the rear brakes when the vehicle is parked 36 25-100
Parking Brake Cable Adjuster Adjusts the tension of the parking brake cable to ensure proper operation of the parking brake. 12 10-25
Parking Brake Caliper Clamps the parking brake shoes or pads against the rear brake discs. 60 $50-$150
Parking Brake Drum Houses the parking brake shoes and provides the friction surface for the parking brake 72 50-150
Parking Brake Drum Cover Covers and protects the parking brake drum, preventing dirt and debris from entering the brake assembly. N/A 15-35
Parking Brake Equalizer Distributes the force from the parking brake cable evenly to the rear brake assemblies. N/A 20-50
Parking Brake Lever Allows the driver to manually engage the parking brake 60 25-100
Parking Brake Lever Pivot Provides the pivot point for the parking brake lever to actuate the parking brake cable 24 15-30
Parking Brake Lever Pivot Bolt Secures the parking brake lever to the vehicle’s chassis, allowing the lever to pivot and engage the parking brake. N/A 5-15
Parking Brake Linkage Connects the parking brake lever to the rear brake mechanism 48 25-100
Parking Brake Release Cable Releases the tension in the parking brake cable when the parking brake is disengaged 24 25-50
Parking Brake Return Spring Pulls the parking brake lever back to the released position when the parking brake is disengaged. 24 3-10
Parking Brake Shoe Presses against the parking brake drum to create friction and hold the vehicle in place 72 25-100
Parking Brake Shoe Adjuster Adjusts the clearance between the parking brake shoes and the drum to maintain proper braking performance. 12 8-20
Parking Brake Shoes Applies friction against the parking brake drum to hold the vehicle in place when parked. 24 30-80
Parking Brake Warning Light Illuminates to indicate when the parking brake is engaged 12 10-25
Parking Lamp Assembly Illuminates the front of the vehicle for increased visibility 24 20-100
Parking Lamp Bulb Provides illumination for the parking lamp assembly 12 5-20
Parking Lamp Socket Holds the parking light bulb in place 24 5-15
Parking Lamp Switch Activates the parking lights when the headlight switch is in the ‘Parking Lights’ position 24 10-25
Parking Light Provides illumination at the front of the vehicle for visibility during low light conditions 12 15
Parking Light Assembly The complete headlight unit for the parking lights 36 45
Parking Light Bulb Illuminates the front and rear parking lights of the vehicle 12 5-15
Parking Light Reflector Reflects the light from the parking light bulb to increase visibility of the vehicle. N/A 5-15
Parking Light Socket Holds the parking light bulb in place and provides the electrical connection to the vehicle’s wiring harness. N/A 5-15
Parking Pawl Engages with the transmission’s output shaft to lock the vehicle in place when the parking brake is applied. N/A 50-150
Parking Pawl Shaft Connects the parking pawl to the transmission 72 30
Parking Pawl Solenoid Engages the parking pawl to lock the transmission in park when the shifter is placed in park 36 50-100
Parking Pawl Spring Applies tension to the parking pawl, keeping it engaged with the transmission’s output shaft when the parking brake is applied. N/A 5-15
Parking Sensor Assists in detecting objects behind the vehicle during parking maneuvers 12 100
Parking Sensor Bracket Mounts the parking sensors to the vehicle body 24 10-25
Parking Sensor Control Module Processes signals from the parking sensors to provide distance information to the driver 36 100-250
Parking Sensor Harness Provides electrical connection between the parking sensors and the control module 36 25-50
Parking Sensor Mounting Bracket Holds the parking sensors in the proper position on the vehicle 24 10-25
Parking Sensor Wiring Harness Connects the parking sensors to the vehicle’s electrical system 36 25-50
Parking Solenoid Engages the parking mechanism when the transmission is placed in park 36 50-100
Parking Sprocket Part of the parking mechanism that engages with the parking pawl 48 25-50
Parking Switch Activates the parking lights when the vehicle is parked 36 10-50
Parking Transmission Locks the transmission output shaft to prevent the vehicle from moving when parked 60 200-600
Parking Valve Controls the application of the parking brake 36 20-100
Parking Warmer Heats the engine and cabin to prepare the vehicle for startup in cold weather. 60 $200-$500
Particulate Filter Traps and filters soot and particulate matter from the exhaust 24 200-500
PAS Module Processes data from the Park Assist Sensors and provides visual/audible alerts to the driver during parking maneuvers. N/A 150-400
Passenger Air Bag Inflator Module Deploys the passenger-side air bag in the event of a collision 60 300-600
Passenger Air Bag Module Houses the passenger-side air bag and inflator module 60 200-400
Passenger Airbag Cover Covers and protects the passenger airbag module 60 50-100
Passenger Footwell Light Illuminates the passenger’s footwell area 36 10-25
Passenger Safety Belt Buckle Secures the passenger’s safety belt 60 25-50
Passenger Safety Belt Latch Plate Connects the safety belt webbing to the safety belt buckle 60 10-25
Passenger Seat Belt Pretensioner Tightens the passenger’s safety belt in a collision to restrain them 60 100-200
Passenger Seat Belt Retractor Retracts and stores the passenger’s safety belt when not in use 60 50-100
Passenger Seat Belt Webbing The strap that secures the passenger during a collision 60 25-50
Passenger Seat Cushion Provides comfort and support for the passenger 60 100-200
Passenger Seat Heater Element Heats the passenger’s seat to provide warmth 24 50-100
Passenger Seat Lumbar Support Adjusts the lower back support of the passenger’s seat 24 50-100
Passenger Seat Recline Mechanism Allows the passenger’s seatback to recline to a desired position 24 50-100
Passenger Seat Track Adjuster Allows the passenger’s seat to slide forward and backward 24 50-100
Passenger Seat Ventilation Fan Circulates air through the passenger’s seat for cooling 24 50-100
Passenger Seatback Recliner Adjusts the angle of the passenger’s seatback 24 50-100
Passenger Seatbelt Anchor Bolt Secures the passenger’s seatbelt to the vehicle structure 60 10-25
Passenger Seatbelt Height Adjuster Allows the height of the passenger’s seatbelt to be adjusted 60 25-50
PCV Hose Carries crankcase vapors from the PCV valve to the intake manifold 24 10-50
PCV Valve Regulates the flow of crankcase vapors to the intake manifold 12 10-50
PCV Valve Grommet Seals the PCV valve in the valve cover 24 5
Pedal Arm Connects the brake or clutch pedal to the respective hydraulic or mechanical system. N/A 20-50
Pedal Box Assembly Houses the accelerator, brake, and clutch pedals 72 150
Pedal Bumper Limits the travel of the accelerator or brake pedal 24 5-15
Pedal Bushings Allow the pedal arm to pivot smoothly with minimal friction. 12 5-15
Pedal Pad Provides a non-slip surface for the driver’s foot on the brake, clutch, or accelerator pedal. N/A 5-15
Pedal Pivot Bushing Allows the pedal to pivot smoothly on its mounting 24 5-15
Pedal Pivot Shaft Provides the pivot point for the accelerator or brake pedal 24 10-25
Pedal Pivot Spring Returns the pedal to its resting position when released 24 5-15
Pedal Position Sensor Measures the position of the accelerator pedal and sends a signal to the engine control unit. 12 50-150
Pedal Position Sensor Connector Provides the electrical connection for the pedal position sensor 24 5-15
Pedal Retainer Clip Secures the pedal pad to the pedal arm. N/A 2-8
Pedal Return Spring Pulls the pedal back to its resting position when the driver’s foot is removed. 24 5-15
Pedal Stop Limits the travel of the accelerator or brake pedal 24 5-15
Pedal Trim Bezel Decorative trim around the accelerator or brake pedal 24 10-25
Penlight A small, handheld flashlight used for inspections N/A 10
Pilot Bearing Supports the rear of the crankshaft and allows the clutch disc to rotate smoothly when the clutch is disengaged. 48 20-80
Pilot Jet Regulates the flow of fuel at low throttle openings in carbureted engines. 12 5-20
Pinion Gear Transfers rotational force from the differential to the drive axle shafts, providing drive torque to the wheels. 60 100-300
Pinion Shaft Bearing Supports the pinion shaft in the steering gear 48 50-100
Pinion Shaft Seal Prevents leakage of power steering fluid around the pinion shaft 48 25-50
Piston Converts the energy from the expanding gases in the engine cylinder into rotational motion 24 50
Piston Boss The mounting points on the piston where the piston pin connects the piston to the connecting rod. N/A 20-50
Piston Compression Ring Seals the gap between the piston and cylinder wall to prevent combustion gases from escaping 24 10-50
Piston Cooling Jets Spray pressurized engine oil onto the underside of the pistons to help dissipate heat and reduce piston temperature. N/A 20-50
Piston Cooling Oil Jet Sprays oil onto the underside of the piston to help dissipate heat 24 10-50
Piston Pin Connects the piston to the connecting rod, allowing the piston to rotate 36 20
Piston Pin Bushing Provides a smooth, low-friction surface for the piston pin to rotate against 48 10-50
Piston Ring Seals the piston against the cylinder wall, preventing leakage of combustion gases 24 30
Piston Ring Compressor Tool used to compress piston rings during engine assembly or piston replacement. N/A 10-25
Piston Ring Expander Tool used to install piston rings onto the piston N/A 5-20
Piston Ring Gap Tool Tool used to measure the gap in piston rings to ensure proper fit N/A 5-20
Piston Ring Pliers Tool used to install and remove piston rings N/A 10-30
Piston Rod Connects the piston to the crankshaft, transferring the force from the piston to the crankshaft 36 75
Piston Rod Bearing Supports the connecting rod on the crankshaft journal 48 20-100
Piston Skirt The lower portion of the piston that contacts the cylinder wall 36 40
Piston Slap Dampener Reduces noise from piston movement in the cylinder 36 10-50
Piston Slap Damper Reduces the noise and vibration caused by piston slap, a phenomenon where the piston momentarily contacts the cylinder wall. N/A 20-50
Piston Squirter Sprays engine oil onto the underside of the piston to help cool and lubricate the piston and cylinder wall. 12 20-50
Piston Wrist Pin Connects the piston to the connecting rod, allowing the piston to pivot 36 25
Plenum Chamber Distributes intake air evenly to the engine’s cylinders 36 50-100
Positive Battery Cable Connects the battery’s positive terminal to the vehicle’s electrical system 72 35
Positive Crankcase Ventilation (PCV) Hose Carries the crankcase vapors from the engine to the intake system for re-burning. 12 10-25
Positive Crankcase Ventilation (PCV) System Vents crankcase gases from the engine to the intake system, preventing them from being released into the atmosphere. 12 50-150
Positive Crankcase Ventilation (PCV) Valve Recirculates crankcase vapors back into the engine’s intake system 12 15
Power Brake Booster Increases the force applied to the brake pedal to enhance braking power 48 150
Power Brake Booster Check Valve Maintains vacuum in the power brake booster 48 15
Power Brake Booster Diaphragm Provides the vacuum-assisted force to the brake master cylinder 48 50-100
Power Brake Booster Spring Returns the power brake booster mechanism to its resting position 48 25-50
Power Brake Master Cylinder Converts the driver’s brake pedal input into hydraulic pressure to actuate the vehicle’s brakes. 24 50-150
Power Seat Control Module Manages the operation of the power seat adjustment motors 36 100-200
Power Seat Motor Moves the power seat in the desired direction 36 100-200
Power Seat Position Sensor Provides feedback on the seat’s position to the control module 36 25-50
Power Steering Accumulator Stores pressurized power steering fluid for instant availability 48 100-200
Power Steering Belt Drives the power steering pump 24 25
Power Steering Control Module Electronically controls the power steering system, adjusting the amount of assist based on driving conditions. N/A 100-300
Power Steering Control Valve Regulates the flow of power steering fluid to the steering gear 48 50-100
Power Steering Cooler Removes heat from the power steering fluid 48 50-100
Power Steering Fluid Hydraulic fluid that lubricates and cools the power steering system 12 30
Power Steering Fluid Cooler Helps dissipate heat from the power steering fluid, maintaining optimal operating temperature. 24 50-150
Power Steering Fluid Level Sensor Monitors the power steering fluid level and sends a signal to the vehicle’s computer. 12 20-50
Power Steering Gear Translates the driver’s steering input into the appropriate motion of the vehicle’s front wheels. 60 200-500
Power Steering Hose Carries the pressurized power steering fluid between the power steering pump and the power steering gear. 48 50-150
Power Steering Leak Detection Pump Actively monitors the power steering system for leaks by pressurizing the system and detecting any pressure drops. N/A 50-150
Power Steering Pressure Switch Monitors power steering system pressure 48 25
Power Steering Pump Pressurizes the power steering fluid to provide steering assist 36 150
Power Steering Pump Belt Tensioner Maintains the proper tension on the power steering pump drive belt 24 25-50
Power Steering Pump Pulley Connects the power steering pump to the engine’s drive system 48 50-100
Power Steering Pump Reservoir Holds the power steering fluid supply for the pump 36 25-50
Power Steering Pump Shaft Seal Prevents power steering fluid leakage around the pump shaft 48 25-50
Power Steering Pump Vanes Transfer fluid pressure from the pump to the steering gear 48 50-100
Power Steering Pump Wiring Harness Provides electrical connection to the power steering pump 36 25-50
Power Steering Rack Converts the rotational motion of the steering wheel into linear motion to turn the wheels 48 300
Power Steering Reservoir Holds the power steering fluid and maintains the system’s pressure 24 40
Power Steering Valve Controls the flow of power steering fluid to assist with steering 36 75
Power Sunroof Motor Relay Controls power to the sunroof open/close motor 48 25
Power Window Limit Switch Prevents the power window from going beyond its travel limits 48 20
Power Window Motor Raises and lowers the power-operated window glass 60 95
Power Window Switch Controls the power window motor and movement 48 25
Pressure Regulator Valve Maintains the proper fuel pressure in the fuel system 24 50
Pressurized Coolant Reservoir Holds the vehicle’s engine coolant under pressure 48 50-100
Pressurized Fuel Tank Stores the vehicle’s fuel supply at an increased pressure 60 100-200
Priming Fuel Pump Provides initial fuel pressure during engine start-up 24 50-100
Proportioning Valve Balances the brake force between the front and rear wheels 48 25-50
Protective Grommet Provides a barrier to prevent chafing or abrasion of wires and cables 24 5-15
Pry Bar A versatile tool for separating and prying apart components N/A 15
Pulsation Damper Helps to smooth out the flow of fuel in the fuel system 36 60
Pump Shaft Bearing Supports and aligns the rotating shaft inside a pump 48 25-50
Purge Control Solenoid Regulates the flow of fuel vapors to the engine 36 45
Purge Control Valve Regulates the flow of vapors from the fuel tank to the engine 36 25-50
Purge Valve Allows the fuel vapors from the fuel tank to be drawn into the engine’s intake system 24 35
Purge Valve Solenoid Activates the purge control valve to allow vapor flow 36 25-50

Descriptions

Paddle Shifter
Paddle-shaped levers mounted on the steering column or wheel that enable the driver to manually select gears, providing greater control and responsiveness.
Paddle Shifter Extension
A small attachment that mounts to the existing paddle shifter, providing a longer lever for improved grip and control during manual gear changes.
Panoramic Sunroof Motor
Electric motor responsible for the smooth operation of a large, glass sunroof that spans across the vehicle’s roof.
Park Assist Camera
A camera mounted on the rear of the vehicle that displays a live video feed on the infotainment display, enhancing visibility and making it easier to park in tight spaces.
Park Assist Sensor
Ultrasonic or radar-based sensors mounted on the front and/or rear of the vehicle that detect the proximity of objects, assisting the driver in safely parking the vehicle.
Park Assist Sensors
Electronic sensors mounted on the front and/or rear bumpers that help guide the driver during parallel and perpendicular parking.
Park Assist Sensors, Front
Sensors installed in the front bumper that provide proximity detection, alerting the driver to objects in the vehicle’s path when parking or maneuvering.
Park Assist Sensors, Rear
Sensors installed in the rear bumper that provide proximity detection, alerting the driver to objects behind the vehicle when parking or reversing.
Park Brake Cable, Rear
A cable that runs from the parking brake lever or electronic parking brake module to the rear brake calipers or drums, allowing the driver to manually or automatically engage the parking brake.
Park Lock Solenoid
Electromechanical component that ensures the transmission is properly engaged in ‘Park’ to prevent the vehicle from rolling away when parked.
Park Pawl
Mechanical component in the transmission that engages a gear to lock the transmission in place when the vehicle is in the ‘Park’ gear selection, preventing unintended movement.
Park Position Switch
Electrical switch that detects when the transmission is in the ‘Park’ position and sends a signal to the vehicle’s computer, enabling proper operation of the park lock system.
Parking Assist Camera
A camera mounted at the rear of the vehicle that captures the area behind the car and displays it on the in-vehicle display, aiding in parking and maneuvering.
Parking Brake
A mechanical brake that locks the rear wheels of a vehicle to prevent it from moving when parked.
Parking Brake Actuator
A mechanical or electromechanical component that pulls on the parking brake cable to engage the rear brakes when the parking brake is applied.
Parking Brake Adjuster
A mechanical device that allows the parking brake cable tension to be adjusted, ensuring the parking brake operates effectively.
Parking Brake Assembly
Consists of a lever, cable, and brake pads or shoes that engage the rear brake system when the parking brake is applied.
Parking Brake Cable
Steel cable that runs from the parking brake lever to the rear brake components, enabling the driver to apply the rear brakes when the vehicle is stationary.
Parking Brake Cable Adjuster
Helps maintain the proper function of the parking brake system by allowing adjustments to the cable tension as the brake pads wear over time.
Parking Brake Caliper
The clamping mechanism that applies the parking brake, typically on the rear wheels, to hold the vehicle in place when parked.
Parking Brake Drum
Drum-shaped component mounted on the rear wheels that the parking brake shoes press against, creating friction to hold the vehicle in place when parked.
Parking Brake Drum Cover
Keeps the parking brake drum clean and free of contaminants, extending the life of the brake components.
Parking Brake Equalizer
Ensures that both rear wheels receive the same braking force from the parking brake, improving overall effectiveness.
Parking Brake Lever
Lever located near the driver’s seat that, when pulled, applies the parking brake mechanism to prevent the vehicle from rolling when parked.
Parking Brake Lever Pivot
The pivot point that the parking brake lever rotates around to pull the parking brake cable and engage the parking brake.
Parking Brake Lever Pivot Bolt
Maintains the proper alignment and movement of the parking brake lever for reliable operation of the parking brake system.
Parking Brake Linkage
Series of rods, cables, and levers that transmit the force from the parking brake lever to the rear brake components, engaging the parking brake when activated.
Parking Brake Release Cable
The cable that runs from the parking brake lever to the parking brake mechanism, allowing the parking brake to be released when not in use.
Parking Brake Return Spring
Restores the parking brake lever to its neutral position after use, ready for the next application of the parking brake.
Parking Brake Shoe
Brake shoe component of the parking brake system that expands to press against the inside of the parking brake drum, generating friction to hold the vehicle stationary.
Parking Brake Shoe Adjuster
Compensates for brake shoe wear over time, keeping the parking brake properly adjusted for optimal function.
Parking Brake Shoes
Shoe-style parking brake component that wears down over time and must be periodically inspected and replaced as needed.
Parking Brake Warning Light
The indicator light on the dashboard that warns the driver when the parking brake is applied, reminding them to disengage it before driving.
Parking Lamp Assembly
Contains the parking light bulb and lens that is mounted on the front of the vehicle to provide supplemental lighting when the headlights are off.
Parking Lamp Bulb
The light bulb that is installed in the parking lamp assembly to produce light and make the vehicle more visible when parked or driving with only parking lights on.
Parking Lamp Socket
The electrical socket that the parking light bulb plugs into, providing power to the exterior parking light.
Parking Lamp Switch
The switch that turns on the parking lights when the headlight switch is in the appropriate position, illuminating the front and rear parking lights.
Parking Light
A small light located on the front fender or bumper of a vehicle that is used for parking or to indicate the presence of the vehicle.
Parking Light Assembly
The housing, lens, and bulb that make up the dedicated parking lights, typically located on the front of the vehicle.
Parking Light Bulb
Replaceable light bulb that provides low-level illumination of the vehicle’s front and rear signal lights when the parking lights are activated.
Parking Light Reflector
Enhances the brightness and effectiveness of the parking lights, improving the vehicle’s visibility to other drivers.
Parking Light Socket
Ensures a secure and reliable connection for the parking light bulb, preventing electrical issues and bulb failure.
Parking Pawl
Prevents the vehicle from rolling when the parking brake is engaged, ensuring the vehicle remains stationary.
Parking Pawl Shaft
The metal rod that the parking pawl, a component that locks the transmission in park, is mounted on and pivots around.
Parking Pawl Solenoid
The electronic solenoid that actuates the parking pawl, locking the transmission when the gear selector is placed in the park position.
Parking Pawl Spring
Maintains the proper positioning of the parking pawl, ensuring the vehicle remains securely parked when the parking brake is engaged.
Parking Sensor
An electronic sensor system that uses ultrasonic or radar technology to detect obstacles behind a vehicle and alert the driver.
Parking Sensor Bracket
The bracket that securely holds the parking sensors in their proper position on the rear of the vehicle.
Parking Sensor Control Module
The electronic control unit that receives data from the parking sensors and translates it into visual and audible warnings to the driver during parking maneuvers.
Parking Sensor Harness
The wiring harness that connects the individual parking sensors to the central control module, transmitting sensor data.
Parking Sensor Mounting Bracket
The bracket that securely mounts the parking sensors to the rear of the vehicle, ensuring they are aligned correctly.
Parking Sensor Wiring Harness
The wiring harness that routes power and signal connections from the parking sensors to the control module and vehicle electrical system.
Parking Solenoid
The solenoid that actuates the parking pawl to lock the transmission when the gear selector is moved to the park position.
Parking Sprocket
The gear-like component that the parking pawl interfaces with to lock the transmission in park when the gear selector is moved to that position.
Parking Switch
An electrical switch that turns on the parking lamps when the ignition is off, providing illumination for the vehicle while parked.
Parking Transmission
A component in an automatic transmission that physically locks the output shaft when the transmission is placed in the ‘Park’ position, preventing the vehicle from rolling.
Parking Valve
A pneumatic or hydraulic valve that directs air or fluid pressure to the parking brake components, engaging the parking brake when the vehicle is parked.
Parking Warmer
A system that uses electricity or fuel to warm the engine coolant and interior of the vehicle before the driver starts the engine, improving cold weather performance and comfort.
Particulate Filter
A component of the vehicle’s emissions control system that captures small particulates from the engine’s exhaust before they are released into the atmosphere.
PAS Module
Electronic control module that integrates the park assist system and communicates with the vehicle’s other computerized systems.
Passenger Air Bag Inflator Module
The pyrotechnic device that rapidly inflates the passenger-side air bag when sensors detect a significant impact, helping to protect the passenger.
Passenger Air Bag Module
The assembly that contains the passenger air bag and inflator module, allowing the air bag to properly deploy during a crash.
Passenger Airbag Cover
The plastic trim piece that covers the passenger-side airbag module, opening to allow the airbag to deploy in a collision.
Passenger Footwell Light
The small light located in the passenger’s footwell that provides illumination for that area of the vehicle interior.
Passenger Safety Belt Buckle
The metal or plastic component that the safety belt tongue clicks into, locking the belt in place to restrain the passenger.
Passenger Safety Belt Latch Plate
The metal component at the end of the safety belt webbing that inserts into the safety belt buckle, securing the passenger.
Passenger Seat Belt Pretensioner
A pyrotechnic device that rapidly tightens the passenger’s safety belt during a crash, helping to keep them secure and reduce injury.
Passenger Seat Belt Retractor
The mechanism that winds up and stores the passenger’s safety belt webbing when the belt is not fastened, keeping it out of the way.
Passenger Seat Belt Webbing
The strong fabric strap that connects the passenger’s safety belt components and restrains them in the event of a crash.
Passenger Seat Cushion
The padded, upholstered component that the passenger sits on, helping to distribute their weight and provide a comfortable seating surface.
Passenger Seat Heater Element
The electrical heating element embedded in the passenger’s seat cushion that warms the seat when activated.
Passenger Seat Lumbar Support
The mechanism that allows the passenger’s seat to be adjusted to provide additional lower back support and comfort.
Passenger Seat Recline Mechanism
The mechanism that enables the passenger’s seatback to tilt rearward, allowing them to adjust their seating position for comfort.
Passenger Seat Track Adjuster
The mechanism that enables the passenger’s seat to be moved closer to or farther from the dashboard, accommodating different passenger sizes and preferences.
Passenger Seat Ventilation Fan
The small electric fan that blows air through the perforated passenger’s seat cushion and backrest, providing ventilation and cooling.
Passenger Seatback Recliner
The mechanism that allows the passenger’s seatback to tilt backward or forward, enabling them to find their preferred seating position.
Passenger Seatbelt Anchor Bolt
The bolt that attaches the passenger’s seatbelt to the vehicle’s frame, providing a strong mounting point for the safety belt.
Passenger Seatbelt Height Adjuster
The mechanism that enables the attachment point of the passenger’s seatbelt to be moved up or down, accommodating different user heights.
PCV Hose
A flexible rubber or plastic hose that transports the blow-by gases from the positive crankcase ventilation (PCV) valve to the engine’s intake system for re-combustion.
PCV Valve
A one-way valve that allows pressure and combustion byproducts in the crankcase to be drawn into the intake system, preventing those gases from escaping to the atmosphere.
PCV Valve Grommet
A rubber or silicone seal that prevents air leaks around the PCV valve where it is installed in the engine’s valve cover.
Pedal Arm
Transmits the driver’s input from the pedal to the braking or clutch system, allowing for proper vehicle control.
Pedal Box Assembly
The complete module that contains the pedals and their associated linkages, sensors, and mounting hardware.
Pedal Bumper
A small rubber or plastic component that stops the pedal from traveling too far, protecting the pedal mechanism.
Pedal Bushings
Reduce wear and tear on the pedal arm, ensuring a responsive and consistent pedal feel.
Pedal Pad
Improves the driver’s control and grip on the pedals, enhancing safety and driving dynamics.
Pedal Pivot Bushing
The bushing that the pedal pivot shaft rotates in, reducing friction and wear to ensure smooth pedal operation.
Pedal Pivot Shaft
The metal shaft that the pedal mounts to and pivots on, allowing the pedal to move when pressed.
Pedal Pivot Spring
The spring that pulls the pedal back to its original position after the driver removes their foot, ready for the next application.
Pedal Position Sensor
Allows the engine to adjust fuel delivery and ignition timing based on the driver’s input, improving engine performance and fuel efficiency.
Pedal Position Sensor Connector
The plug that the pedal position sensor wire harness connects to, transmitting the sensor signal to the vehicle’s computer.
Pedal Retainer Clip
Keeps the pedal pad firmly in place, preventing it from becoming loose or detached during use.
Pedal Return Spring
Ensures the pedal automatically returns to its neutral position, ready for the next input from the driver.
Pedal Stop
A small component, usually made of rubber or plastic, that physically stops the pedal from moving past a certain point, protecting the mechanism.
Pedal Trim Bezel
The plastic or metal trim piece that surrounds the pedal, providing a finished appearance to the pedal assembly.
Penlight
A compact, pen-sized LED flashlight useful for illuminating tight spaces during maintenance or repairs.
Pilot Bearing
Also known as a ‘pilot bushing’, this small bearing is critical for proper clutch operation in manual transmission vehicles.
Pilot Jet
Tiny orifice or jet in the carburetor that meters the air/fuel mixture during engine idle and low-load conditions.
Pinion Gear
Small gear within the differential that meshes with the larger ring gear, converting the rotational axis from the differential to the axle shafts.
Pinion Shaft Bearing
The bearing that the pinion shaft of the steering gear rotates in, allowing smooth, low-friction steering input.
Pinion Shaft Seal
The seal that creates a tight barrier around the pinion shaft of the steering gear, keeping power steering fluid contained.
Piston
A cylindrical component that moves up and down within the engine cylinder to transmit the force of the exploding fuel-air mixture to the crankshaft.
Piston Boss
Reinforced areas on the piston that provide a sturdy interface for the piston pin, which allows the piston to pivot as it reciprocates.
Piston Compression Ring
A metal ring installed in a groove around the piston that maintains a tight seal against the cylinder wall, keeping high-pressure gases from leaking past the piston.
Piston Cooling Jets
Small oil jets or nozzles located in the engine block that direct a cooling oil spray onto the pistons during operation.
Piston Cooling Oil Jet
A nozzle that directs a spray of engine oil onto the bottom of the piston, cooling the component and preventing heat-related damage.
Piston Pin
A metal pin that passes through the piston and connects it to the connecting rod, enabling the piston to pivot as it moves up and down.
Piston Pin Bushing
A thin, cylindrical sleeve that is pressed into the piston pin bore, reducing wear between the piston pin and the piston as the engine runs.
Piston Ring
A split metal or steel ring that fits into a groove in the piston, creating a tight seal against the cylinder wall to contain the combustion pressure.
Piston Ring Compressor
Allows the piston to be properly installed in the cylinder bore by temporarily reducing the piston ring diameter.
Piston Ring Expander
A specialized tool with a spring-loaded mechanism that spreads the piston rings open, allowing them to be easily installed onto the piston grooves.
Piston Ring Gap Tool
A tool with a dial indicator that is used to check the end gap of piston rings once they have been installed, verifying the rings will seal properly against the cylinder wall.
Piston Ring Pliers
Specialized pliers with angled, serrated jaws that can grasp and manipulate piston rings, making it easier to install and remove them from the piston.
Piston Rod
Also called a connecting rod, this component links the piston to the crankshaft, allowing the reciprocating motion of the piston to be converted into rotational motion of the crankshaft.
Piston Rod Bearing
A thin, cylindrical bearing installed between the connecting rod and the crankshaft journal, allowing the rod to rotate smoothly as the engine runs.
Piston Skirt
The part of the piston that extends below the piston rings and makes sliding contact with the cylinder walls, helping to guide the piston’s movement.
Piston Slap Dampener
A rubber or silicone component installed between the piston pin and the connecting rod that absorbs vibrations and impacts, minimizing the ‘slapping’ noise as the piston moves.
Piston Slap Damper
Improves engine refinement and reduces wear on the cylinder walls by dampening the piston’s movement within the cylinder.
Piston Squirter
Enhances engine efficiency and longevity by reducing heat and friction in the piston and cylinder assembly.
Piston Wrist Pin
Also called a piston pin, this component links the piston to the connecting rod, enabling the piston to move up and down while the connecting rod rotates.
Plenum Chamber
The large, enclosed space between the throttle body and the intake manifold that helps ensure an even distribution of air to each cylinder.
Positive Battery Cable
The thick, insulated cable that runs from the battery’s positive post to the vehicle’s electrical distribution point, providing the main power feed.
Positive Crankcase Ventilation (PCV) Hose
Helps reduce emissions and improve engine efficiency by recycling the crankcase gases back into the combustion process.
Positive Crankcase Ventilation (PCV) System
Reduces emissions and improves engine performance by recirculating the crankcase vapors back into the combustion process.
Positive Crankcase Ventilation (PCV) Valve
A valve that allows blow-by gases from the crankcase to be drawn back into the intake manifold, reducing emissions and improving engine efficiency.
Power Brake Booster
A vacuum-operated or hydraulic device that multiplies the force applied to the brake pedal, making it easier to stop the vehicle.
Power Brake Booster Check Valve
A one-way valve that allows air to flow into the brake booster to assist braking, but prevents vacuum loss when the engine is off.
Power Brake Booster Diaphragm
The flexible rubber diaphragm inside the power brake booster that uses engine vacuum to amplify the force applied to the brake pedal.
Power Brake Booster Spring
The spring that pulls the power brake booster back to its normal state after the brake pedal is released.
Power Brake Master Cylinder
Plays a crucial role in the brake system by providing the necessary hydraulic force to slow or stop the vehicle.
Power Seat Control Module
The electronic control unit that receives input from the power seat switches and controls the motors that move the seat.
Power Seat Motor
The electric motor that physically drives the seat adjustment mechanisms, allowing the seat position to be changed at the touch of a button.
Power Seat Position Sensor
The sensor that detects the current position of the power seat and relays that information to the seat control module.
Power Steering Accumulator
A reservoir that holds a volume of pressurized power steering fluid, providing an immediate supply of fluid when the steering wheel is turned.
Power Steering Belt
The serpentine belt that connects the engine to the power steering pump, transferring rotational energy to provide power-assisted steering.
Power Steering Control Module
Optimizes the power steering response and effort to provide the ideal steering feel for the driver in various situations.
Power Steering Control Valve
The valve that controls the amount of pressurized fluid sent to the steering gear based on driver input and vehicle speed.
Power Steering Cooler
A small heat exchanger that circulates the power steering fluid through it to dissipate excessive heat, helping to prevent fluid breakdown.
Power Steering Fluid
A specialized fluid that circulates through the power steering system, providing lubrication and transmitting hydraulic pressure to assist with steering.
Power Steering Fluid Cooler
Prevents the power steering fluid from overheating, which can lead to premature wear of the power steering components.
Power Steering Fluid Level Sensor
Alerts the driver to low power steering fluid levels, allowing for timely maintenance to prevent system failure.
Power Steering Gear
Provides the mechanical linkage between the steering wheel and the vehicle’s front wheels, allowing the driver to steer the vehicle.
Power Steering Hose
Ensures a reliable supply of hydraulic fluid to the power steering system, enabling smooth and responsive steering.
Power Steering Leak Detection Pump
Helps identify power steering system leaks early, allowing for timely repair and preventing further damage to the system.
Power Steering Pressure Switch
An electronic sensor that detects the pressure in the power steering system and signals the ECU if it falls outside of the normal operating range.
Power Steering Pump
An engine-driven pump that generates the hydraulic pressure needed to operate the power steering system, making it easier for the driver to turn the steering wheel.
Power Steering Pump Belt Tensioner
The mechanical device that applies the correct amount of tension to the power steering pump drive belt, ensuring efficient power transmission.
Power Steering Pump Pulley
The pulley mounted on the power steering pump that transfers rotational force from the engine’s serpentine belt to operate the pump.
Power Steering Pump Reservoir
The integrated reservoir that provides the power steering pump with a dedicated supply of hydraulic fluid.
Power Steering Pump Shaft Seal
The seal that creates a tight barrier between the power steering pump’s rotating shaft and the pump housing, keeping fluid from leaking out.
Power Steering Pump Vanes
The metal vanes inside the power steering pump that rotate to displace and pressurize the hydraulic fluid sent to the steering gear.
Power Steering Pump Wiring Harness
The wiring harness that connects the power steering pump to the vehicle’s electrical system, supplying power and control signals.
Power Steering Rack
The main component of the power steering system that translates the driver’s steering inputs into wheel turning, enabling the vehicle to be steered.
Power Steering Reservoir
A container that stores the power steering fluid and provides a means for the fluid to circulate through the power steering system.
Power Steering Valve
A component in the power steering system that regulates the hydraulic pressure and flow of the power steering fluid to provide the desired level of steering assistance.
Power Sunroof Motor Relay
The electronic switch that provides electricity to the sunroof’s electric motor, allowing the sunroof to be opened and closed.
Power Window Limit Switch
A safety sensor that stops the power window motor when the window glass reaches the top or bottom of its path, avoiding damage.
Power Window Motor
The electric motor that drives the window regulator mechanism to move the window up and down at the command of the power window switch.
Power Window Switch
The button or rocker switch that the driver or passenger presses to activate the power window motor and open or close the window.
Pressure Regulator Valve
A valve that monitors and adjusts the fuel pressure in the fuel system, ensuring the engine receives the correct amount of fuel for optimal performance.
Pressurized Coolant Reservoir
The sealed container that holds the engine’s coolant at an elevated pressure, raising the boiling point and improving the cooling system’s efficiency.
Pressurized Fuel Tank
The fuel tank that maintains the fuel at an elevated pressure, improving fuel delivery and allowing the use of more efficient fuel injectors.
Priming Fuel Pump
The electric or mechanical fuel pump that operates briefly when the ignition is turned on, building up fuel pressure before the engine starts.
Proportioning Valve
The valve that regulates the amount of brake pressure sent to the rear brakes, preventing the rear wheels from locking up and providing even braking force distribution.
Protective Grommet
A flexible, molded rubber or plastic component that wraps around and protects wires, hoses, or cables from rubbing against sharp edges or abrasive surfaces.
Pry Bar
A sturdy metal bar with a wedged end used to apply leverage when disassembling parts or prying items apart during repairs.
Pulsation Damper
Also known as a fuel damper or fuel pulse damper, this component absorbs pressure fluctuations in the fuel line, providing a more consistent flow of fuel to the engine.
Pump Shaft Bearing
The bearing that the rotating shaft of a pump, such as a fuel or water pump, spins in, reducing friction and wear.
Purge Control Solenoid
An electronically controlled valve that opens and closes to allow the controlled release of fuel vapors from the evaporative emissions system into the engine’s intake for combustion.
Purge Control Valve
The electronically-controlled valve that manages the release of fuel vapors from the fuel tank into the engine’s intake system for combustion.
Purge Valve
A solenoid-operated valve that controls the flow of fuel vapors from the fuel tank to the engine’s intake system, reducing evaporative emissions.
Purge Valve Solenoid
The electric solenoid that opens and closes the purge control valve, controlling the release of fuel vapors from the fuel tank.

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