There are 87 car parts that start with the letter T. From Tachometer to Turn Signal Relay. 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 T

Car parts function maintenance interval (months) replacement cost (USD)
Tachometer Measures the engine’s speed in revolutions per minute (RPM) 6 50
Tail Lamp Provides rear illumination for the vehicle 12 50-150
Tail Pipe Channels the exhaust gases out of the vehicle 24 75
Tailgate The hinged door at the rear of a pickup truck or SUV that provides access to the cargo area N/A 300
Tailgate Hinge Allows the tailgate to open and close smoothly N/A 50
Tailgate Latch Secures the tailgate in the closed position N/A 75
Tailgate Release Handle Provides a means of opening the tailgate from the exterior of the vehicle N/A 20
Taillight Provides rear illumination for the vehicle, enhancing visibility and signaling intent to other drivers 12 20
Taillight Bulb Illuminates the taillight assembly 12 5
Taillight Socket Provides a secure connection for the taillight bulb N/A 10
Tailshaft Connects the transmission to the rear differential 36 300-800
Tailshaft Yoke Connects the transmission to the driveshaft 24 50-150
Tappet Converts the camshaft’s rotational motion into linear motion to open and close the valves 12 50-150
Tensioner Pulley Maintains proper tension on the timing belt or chain 36 30-100
Thermocouple Measures the temperature of the exhaust gas, providing feedback to the engine control unit N/A 75
Thermosensor Monitors the engine’s temperature and provides data to the vehicle’s computer 12 20-50
Thermostat Regulates the temperature of the engine coolant, ensuring optimal operating temperature 36 20
Thermostat Housing Protects the thermostat and provides a secure mounting point N/A 30
Thermostatic Expansion Valve Regulates the flow of refrigerant in the air conditioning system, ensuring optimal cooling performance. 24 50-150
Thermostatically-Controlled Electric Fan Automatically turns on the radiator cooling fan when the engine coolant reaches a certain temperature N/A 100
Throttle Body Controls the amount of air entering the engine, regulating engine power 48 200
Throttle Cable Connects the accelerator pedal to the throttle body, transmitting the driver’s commands 36 30
Throttle Plate Controls the amount of air entering the engine 24 50-150
Throttle Position Sensor Measures the position of the throttle valve, providing input to the engine control unit 36 50
Tie Rod Connects the steering knuckle to the steering rack, allowing the wheels to turn 24 50
Tie Rod End Connects the tie rod to the steering knuckle, allowing for steering movement 24 40
Timing Belt Synchronizes the opening and closing of the engine’s valves with the rotation of the crankshaft 60 200
Timing Belt Tensioner Maintains the proper tension on the timing belt 36 50-150
Timing Chain Synchronizes the opening and closing of the engine’s valves with the rotation of the crankshaft Lifetime 300
Timing Chain Tensioner Maintains the proper tension on the timing chain, preventing slack and wear 48 75
Timing Cover Protects the timing belt or chain and associated components from dirt, debris, and damage N/A 50
Timing Gear Transfers rotational movement from the crankshaft to the camshaft(s) Lifetime 100
Timing Tensioner Maintains the proper tension on the timing belt or chain, minimizing wear and ensuring smooth operation 36 75
Tire Provides traction, cushioning, and support for the vehicle’s weight 12 100
Tire Balancer Balances the weight of the tire and wheel assembly for smooth, vibration-free operation N/A 300
Tire Changer Removes and installs tires on the wheel rims N/A 500
Tire Inflator Allows the driver to inflate the tires to the recommended pressure N/A 20
Tire Inflator Hose Connects the tire inflator to the tire valve stem for adding air N/A 10
Tire Pressure Monitoring System (TPMS) Alerts the driver when tire pressure drops below the recommended level N/A 100
Tire Pressure Monitoring System (TPMS) Sensor Monitors tire pressure and warns the driver of under-inflation 60 50-150
Tire Repair Kit Allows for temporary repair of a punctured tire N/A 20
Tire Repair Plug A temporary fix for a punctured tire N/A 5-20
Tire Tread Depth Gauge A tool used to measure the remaining tread depth on a vehicle’s tires N/A 10-30
Tire Valve Stem Allows air to be added to or released from the tire 24 5
Torque Converter Transfers engine power to the transmission in an automatic transmission system 72 500
Torque Rod Connects the suspension to the vehicle’s frame, controlling lateral movement 48 100
Torque Wrench A tool used to tighten fasteners to a specific torque value N/A 50-200
Torsion Bar Provides spring-like suspension support in the front or rear of the vehicle Lifetime 200
Tow Hook Provides a secure attachment point for towing the vehicle N/A 20
Traction Battery Stores and provides electrical power for the propulsion of an electric or hybrid vehicle 96 5000
Traction Control Module Monitors wheel speed and adjusts engine power to prevent wheel spin 60 200-500
Traction Control System (TCS) Helps maintain control and prevent wheel spin during acceleration on slippery surfaces N/A 300
Trailer Brake Controller Coordinates braking between the tow vehicle and trailer Lifetime 100-300
Trailer Hitch Allows the vehicle to tow a trailer or other equipment N/A 150
Trailer Hitch Receiver The mounting point for the trailer hitch 60 50-200
Trailer Lighting Connector Provides an electrical connection between the vehicle and the trailer’s lighting system N/A 20-50
Trailer Winch A mechanical device used to load and unload a trailer N/A 200-500
Trailer Wiring Harness Connects the vehicle’s electrical system to the trailer’s lighting and accessories N/A 50-200
Trailing Arm Connects the rear suspension to the vehicle’s frame 60 150-500
Transmission Transfers power from the engine to the drive wheels, allowing for different gear ratios 72 2000
Transmission Control Module (TCM) Manages the operation of the vehicle’s transmission 60 300-800
Transmission Dipstick Allows the driver to check the transmission fluid level 12 10
Transmission Filter Removes contaminants from the transmission fluid, preventing wear and damage 24 30
Transmission Fluid Lubricates and cools the transmission, allowing it to function properly 24 30
Transmission Mount Secures the transmission to the vehicle’s chassis, reducing vibration and noise 72 100
Transmission Oil Pump Circulates the transmission fluid throughout the transmission 60 150-500
Transmission Pan Holds the transmission fluid and protects the internal components N/A 50
Transmission Sensor Provides information to the vehicle’s computer about the transmission’s operation N/A 75
Transmission Shift Solenoid Controls the flow of transmission fluid to the transmission’s gear-shifting mechanisms 36 50-150
Transmission Shifter Cable Connects the gear selector to the transmission 36 50-150
Transmission Solenoid Controls the flow of transmission fluid to engage and disengage the gears 48 100
Transmission Syncro Synchronizes the rotation of the gears during gear changes in a manual transmission 72 150
Transmission Valve Body Directs the flow of transmission fluid to operate the transmission’s components 72 300
Transmission Vent Allows air to enter and exit the transmission, preventing pressure buildup N/A 10
Tripod CV Joint Allows the drive shaft to articulate while transmitting power to the wheels 48 150
Trunk Latch Secures the trunk lid and allows the driver to open and close the trunk N/A 75
Trunk Lid Covers the vehicle’s trunk or cargo area N/A 200
Trunk Lid Hinge Allows the trunk lid to open and close smoothly N/A 50
Trunk Release Cable Connects the trunk release mechanism to the trunk latch, allowing the trunk to be opened N/A 20
Trunk Strut Assists in opening and closing the trunk lid, reducing the effort required N/A 30
Tube Nut Secures fluid lines and fittings to components N/A 5
Turbocharger Increases engine power by forcing more air into the engine’s cylinders 72 800
Turbocharger Oil Line Supplies lubricating oil to the turbocharger’s bearings 36 30
Turbocharger Wastegate Regulates the amount of exhaust gas flowing through the turbocharger, controlling boost pressure 48 150
Turbocharger Water Line Circulates coolant through the turbocharger to dissipate heat 36 20
Turn Signal Indicates the driver’s intent to turn or change lanes 12 20
Turn Signal Relay Controls the timing and operation of the turn signal lights N/A 30

Descriptions

Tachometer
A dashboard instrument that displays the engine’s rotational speed, allowing the driver to monitor the engine’s performance and avoid over-revving.
Tail Lamp
The tail lamp is a rear-mounted light that illuminates the vehicle’s rear, signaling its presence and brake status to other drivers.
Tail Pipe
The final section of the exhaust system that extends from the muffler to the rear of the vehicle, allowing the engine’s exhaust gases to be safely expelled from the car.
Tailgate
The hinged panel at the back of a pickup truck or SUV that can be opened to load or unload cargo, or to provide a flat surface for various activities.
Tailgate Hinge
The set of hinges that connect the tailgate to the vehicle’s body, enabling the tailgate to swing open and closed with ease and stability.
Tailgate Latch
The locking mechanism that keeps the tailgate closed, and the release mechanism that allows the driver or passenger to open the tailgate, often operated by a key or remote control.
Tailgate Release Handle
A handle or button located on the outside of the vehicle, near the tailgate, that the driver or passenger can use to unlatch and open the tailgate.
Taillight
The rear-mounted lights that illuminate when the vehicle’s brakes are applied or when the turn signals are activated, improving safety and communication with other road users.
Taillight Bulb
The replaceable light bulb that is installed in the taillight housing, providing the rear illumination that is required for the vehicle to be visible and legally operated on the road.
Taillight Socket
The electrical socket that the taillight bulb is inserted into, creating a reliable connection to the vehicle’s electrical system and allowing the taillight to function properly.
Tailshaft
The tailshaft, also known as the driveshaft, is a rotating shaft that transmits power from the transmission to the rear differential, enabling the vehicle to move.
Tailshaft Yoke
A forged or cast metal component that links the transmission output shaft to the driveshaft, allowing power transmission to the rear axle.
Tappet
Tappets are components in the engine’s valvetrain that follow the shape of the camshaft lobes, opening and closing the intake and exhaust valves as the engine runs.
Tensioner Pulley
A pulley that applies a constant force to the timing belt or chain, preventing slippage and ensuring proper valve timing.
Thermocouple
A temperature sensor located in the exhaust system that generates a small electrical voltage proportional to the exhaust gas temperature, allowing the engine control unit to monitor and adjust the air-fuel mixture accordingly.
Thermosensor
The thermosensor is a temperature-sensitive device that measures the engine’s temperature and sends this information to the vehicle’s computer for efficient engine management and temperature control.
Thermostat
A heat-sensitive valve that restricts the flow of coolant until the engine reaches its optimal operating temperature, then opens to allow the coolant to circulate and dissipate excess heat.
Thermostat Housing
A plastic or metal housing that encloses the thermostat, protecting it from damage and providing a mounting point for the component within the engine’s cooling system.
Thermostatic Expansion Valve
This valve controls the amount of refrigerant entering the evaporator coil, allowing the system to maintain the desired temperature. Proper functioning is essential for efficient and effective air conditioning.
Thermostatically-Controlled Electric Fan
An electric fan that is activated by a temperature-sensitive switch or the vehicle’s engine control unit, providing additional airflow through the radiator when the engine reaches a specific temperature, helping to prevent overheating.
Throttle Body
A device that houses the throttle valve, which opens and closes to regulate the airflow into the engine, allowing the driver to control the engine’s power output.
Throttle Cable
A flexible cable that links the accelerator pedal to the throttle body, translating the driver’s input on the pedal into the appropriate opening and closing of the throttle valve.
Throttle Plate
The throttle plate is a butterfly valve located within the throttle body that opens and closes to regulate the flow of air into the engine, adjusting the engine’s power output.
Throttle Position Sensor
An electronic sensor that detects the angle of the throttle valve and sends this information to the vehicle’s computer, allowing for precise control of engine power and optimization of fuel delivery.
Tie Rod
A metal linkage that transmits the steering input from the steering rack to the wheels, enabling the driver to steer the vehicle in the desired direction.
Tie Rod End
A ball-and-socket joint that attaches the tie rod to the steering knuckle, permitting the wheels to turn smoothly in response to steering inputs.
Timing Belt
A reinforced rubber belt that connects the crankshaft to the camshaft(s), ensuring the proper timing of the engine’s valve operation for efficient combustion.
Timing Belt Tensioner
The timing belt tensioner is a spring-loaded mechanism that keeps the timing belt tight, preventing it from slipping and ensuring proper synchronization between the crankshaft and camshaft.
Timing Chain
A metal chain that connects the crankshaft to the camshaft(s), maintaining the precise timing of the engine’s valve operation for the life of the vehicle.
Timing Chain Tensioner
A mechanism that adjusts the tension on the timing chain, compensating for any stretching or wear over time and ensuring the optimal timing of the engine’s valve operation.
Timing Cover
A metal cover that encloses the timing belt or chain, protecting it from environmental elements and preventing potential malfunctions.
Timing Gear
A set of gears that are connected to the crankshaft and camshaft(s), ensuring the precise timing of the engine’s valve operation by linking the rotation of the crankshaft to the opening and closing of the valves.
Timing Tensioner
A mechanism that adjusts the tension on the timing belt or chain, compensating for any slack or stretch over time and ensuring the optimal timing of the engine’s valve operation.
Tire
The rubber-made, air-filled component that wraps around the wheel rim, responsible for transferring the vehicle’s power to the road and providing a comfortable ride.
Tire Balancer
A machine that spins the tire and wheel assembly to identify any imbalances, and then applies small weights to the wheel to counteract the imbalance, ensuring a smooth and comfortable ride.
Tire Changer
A specialized machine used in tire shops and garages to safely remove and mount tires on the vehicle’s wheels, ensuring proper installation and avoiding damage to the tires or wheels.
Tire Inflator
A portable device, often CO2-powered or electric, that can be used to add air to underinflated tires, ensuring proper tire pressure for optimal performance and safety.
Tire Inflator Hose
A flexible hose with a fitting on one end that attaches to the tire inflator and a valve stem connector on the other end, allowing air to be pumped into the tire.
Tire Pressure Monitoring System (TPMS)
An electronic system that continuously monitors the air pressure in each tire and provides a warning if any tire is significantly underinflated, promoting safety and fuel efficiency.
Tire Pressure Monitoring System (TPMS) Sensor
An electronic sensor installed in each wheel that measures the tire pressure and transmits the data to the vehicle’s onboard computer.
Tire Repair Kit
A set of tools and materials, such as a tire plug, sealant, and a valve stem tool, that can be used to temporarily fix a small hole or puncture in a tire, enabling the driver to safely continue their journey.
Tire Repair Plug
A tire repair plug is a small, conical-shaped device that can be inserted into a small puncture in a tire, sealing the hole and allowing the tire to be safely used until a permanent repair can be made.
Tire Tread Depth Gauge
A tire tread depth gauge is a tool that can be used to measure the amount of remaining tread on a vehicle’s tires, helping to determine when the tires need to be replaced for safety and performance reasons.
Tire Valve Stem
The small, removable component that is connected to the wheel rim and provides access to the tire’s internal air chamber, enabling inflation and deflation as needed.
Torque Converter
A fluid-coupling device that acts as an intermediate between the engine and the transmission, allowing for smooth power delivery and enabling the engine to operate at different speeds than the transmission.
Torque Rod
A metal link that is part of the suspension system, helping to control the lateral (side-to-side) movement of the suspension components and providing stability during cornering and braking.
Torque Wrench
A torque wrench is a specialized tool used to apply a precise amount of torque to threaded fasteners, ensuring they are tightened to the manufacturer’s recommended specifications for safety and proper component function.
Torsion Bar
A thick, U-shaped metal bar that is part of the suspension system, storing and releasing energy to provide a smooth ride and control the vehicle’s body movement during acceleration, braking, and cornering.
Tow Hook
A sturdy metal hook, usually located on the front or rear of the vehicle, that can be used to attach a tow strap or cable for the purpose of being towed by another vehicle.
Traction Battery
The large, high-capacity battery pack that is the primary energy source for an electric or hybrid vehicle, enabling it to be propelled solely by electric power or in combination with an internal combustion engine.
Traction Control Module
The traction control module is an electronic control unit that monitors the vehicle’s wheel speed sensors and adjusts the engine’s power output to prevent wheel slip, improving traction and stability.
Traction Control System (TCS)
An electronic system that monitors the wheels for signs of slippage and automatically applies individual wheel brakes or reduces engine power to restore traction and improve vehicle stability.
Trailer Brake Controller
An electronic device that manages the application of the trailer’s brakes, ensuring synchronized braking between the tow vehicle and trailer.
Trailer Hitch
A mechanical device, typically mounted on the rear of the vehicle, that provides a connection point for attaching a trailer or other towed equipment, enabling the vehicle to transport additional loads.
Trailer Hitch Receiver
The trailer hitch receiver is a metal component that is permanently installed on the vehicle, providing a standardized attachment point for the trailer hitch.
Trailer Lighting Connector
The trailer lighting connector is an electrical interface that allows the vehicle’s lighting system to power the trailer’s brake lights, turn signals, and running lights, ensuring the trailer is properly illuminated.
Trailer Winch
A trailer winch is a powered or manual winding mechanism that is used to pull a trailer onto or off of a vehicle, making the loading and unloading process easier and safer.
Trailer Wiring Harness
The trailer wiring harness is a set of wires and connectors that links the vehicle’s electrical system to the trailer’s lighting, brakes, and other accessories, allowing them to function properly while towing.
Trailing Arm
The trailing arm is a suspension component that connects the rear of the vehicle to the frame, allowing the wheels to move up and down while maintaining proper alignment.
Transmission
The component that changes the gear ratio between the engine and the drive wheels, enabling the vehicle to accelerate, maintain speed, and climb hills efficiently.
Transmission Control Module (TCM)
The Transmission Control Module (TCM) is an electronic control unit that monitors and controls the various components of the vehicle’s transmission, ensuring smooth and efficient gear changes.
Transmission Dipstick
A long, thin rod that is inserted into the transmission to measure the level of the transmission fluid, enabling the driver to ensure the fluid is at the proper level for optimal performance and longevity.
Transmission Filter
A replaceable filter element that is installed in the transmission’s fluid circuit, trapping debris and particles to keep the transmission fluid clean and free of impurities that could harm the internal components.
Transmission Fluid
A specialized fluid that is designed to reduce friction and heat within the transmission, ensuring smooth gear changes and prolonging the transmission’s lifespan.
Transmission Mount
A rubber-based mount that connects the transmission to the vehicle’s frame, isolating the transmission from the chassis and minimizing the transfer of vibrations and noise to the cabin.
Transmission Oil Pump
The transmission oil pump is a component that pressurizes and circulates the transmission fluid, ensuring proper lubrication and cooling of the internal transmission parts.
Transmission Pan
The metal or plastic housing at the bottom of the transmission that contains the transmission fluid and shields the internal gears, clutches, and other moving parts from damage and contamination.
Transmission Sensor
An electronic sensor that monitors various transmission parameters, such as fluid level, gear position, and temperature, and sends this data to the vehicle’s control module for diagnostic and control purposes.
Transmission Shift Solenoid
The transmission shift solenoid is an electronically-controlled valve that regulates the flow of transmission fluid to the gear-shifting components, allowing the transmission to change gears smoothly and efficiently.
Transmission Shifter Cable
The transmission shifter cable is a mechanical linkage that transmits the driver’s gear selection input from the gear shift lever to the transmission, enabling the vehicle to be put into the desired gear.
Transmission Solenoid
An electromechanical valve that regulates the flow of transmission fluid to the various clutches and gears, enabling smooth and efficient gear changes in an automatic transmission.
Transmission Syncro
A set of cone-shaped friction components that temporarily equalize the rotational speeds of the gears during a gear shift, allowing the driver to smoothly engage the new gear without grinding or jerking.
Transmission Valve Body
The main hydraulic control center of an automatic transmission, responsible for routing the transmission fluid to the appropriate clutches, gears, and sensors to facilitate gear changes and overall transmission operation.
Transmission Vent
A small opening or tube that connects the transmission case to the atmosphere, allowing for the expansion and contraction of air inside the transmission as the temperature and fluid level change.
Tripod CV Joint
A type of constant-velocity (CV) joint that uses three spherical bearings to connect the drive shaft to the wheel hub, enabling smooth power transfer and wheel articulation in front-wheel-drive and all-wheel-drive vehicles.
Trunk Latch
The locking mechanism that keeps the trunk lid closed, and the release mechanism that allows the driver to open the trunk, typically operated by a key or remote control.
Trunk Lid
The hinged, exterior panel at the rear of the vehicle that provides access to the trunk or cargo space, allowing for the storage and transportation of various items.
Trunk Lid Hinge
The set of hinges that connect the trunk lid to the vehicle’s body, enabling the lid to swing open and closed with ease and stability.
Trunk Release Cable
The cable that runs from the trunk release (usually located inside the vehicle) to the trunk latch, transmitting the driver’s command to unlatch the trunk lid.
Trunk Strut
A gas-filled shock absorber that helps to lift the trunk lid when opening and provides a controlled, smooth closing motion, making the trunk easier to operate.
Tube Nut
A small, threaded nut that is used to connect fluid lines, such as those for the brake system or fuel system, to various components, providing a secure and leak-proof attachment.
Turbocharger
A forced induction system that uses a turbine-driven compressor to increase the density of the air flowing into the engine, resulting in greater power output and improved fuel efficiency.
Turbocharger Oil Line
A hose or tube that carries engine oil from the engine’s lubrication system to the turbocharger, ensuring the proper lubrication of the turbocharger’s internal components and preventing premature wear.
Turbocharger Wastegate
A valve that controls the flow of exhaust gases to the turbocharger, allowing excess pressure to be diverted away from the turbocharger, preventing damage and maintaining optimal boost levels.
Turbocharger Water Line
A hose or tube that carries engine coolant from the engine’s cooling system to the turbocharger, helping to regulate the temperature of the turbocharger and prevent overheating.
Turn Signal
The blinking lights, usually located on the front and rear of the vehicle, that alert other drivers to the driver’s intention to turn or change direction, improving safety and communication on the road.
Turn Signal Relay
An electronic component that regulates the blinking rate and duration of the turn signal lights, ensuring the proper signaling to other drivers.

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