There are 60 car parts that start with the letter H. From Hail Shield to Hydraulic Shock Absorber. 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 H

Car parts function maintenance interval (months) replacement cost (USD)
Hail Shield Protects the vehicle’s exterior from hail damage. 6 50
Halfshaft Transfers power from the differential to the wheels, allowing them to rotate at different speeds during turns. 24 $200-$500
Halogen Bulb Provides illumination for the vehicle’s headlights. 12 10
Halogen Headlight Bulb Provides brighter illumination compared to standard incandescent bulbs. 12 $10-$30
Handbrake Applies the rear brakes to hold the vehicle in place when parked. 12 75
Hardtop Convertible A retractable metal roof that can be lowered to expose the passenger compartment. N/A $2,000-$5,000
Harmonic Balancer Reduces torsional vibrations from the crankshaft to improve engine smoothness and reliability 24 $150-$500
Hatch Latch Headliner Headrest Heater Inlet Hose
Hatch Lift Cylinder Opens and closes the rear hatch or tailgate on a vehicle, typically using a gas-charged lift mechanism. 24 $50 – $150
Hazard Light Flasher Causes the turn signal lights to flash simultaneously, indicating a hazard or emergency situation. 36 $10 – $30
Hazard Switch Activates the hazard warning lights to alert other drivers of an emergency situation N/A $15-$50
Head Gasket Forms a critical seal between the engine block and cylinder head, preventing coolant and oil leaks. 48 $300 – $800
Headlight Illuminates the road ahead, improving visibility at night or in poor weather conditions. 6 100
Headlight Adjuster Allows the driver to adjust the aim of the headlights. 12 25
Headlight Bulb Provides the light source for the headlights. 12 15
Headlight Fuse Protects the headlight circuit from electrical overload. 24 5
Headlight Housing Encases the headlight assembly and protects the bulb and other components. 60 75
Headlight Leveling System Automatically adjusts the aim of the headlights based on vehicle load and road conditions. 24 200
Headlight Relay Controls the power supply to the headlights. 24 20
Headlight Switch Activates and deactivates the vehicle’s headlights. 12 25
Headlight Wiring Harness Provides the electrical connections for the headlight system. 60 50
Headliner Covers the interior ceiling of the vehicle. 60 200
Heat Shield Protects components from excessive heat generated by the exhaust system. 24 $50-$150
Heater Blower Motor Circulates heated air from the HVAC system into the vehicle’s cabin. 36 75
Heater Control Module Regulates the temperature and airflow of the vehicle’s heating system 12 $100-$300
Heater Control Valve Regulates the flow of coolant to the heater core. 36 50
Heater Core Transfers heat from the engine’s coolant to the cabin air. 60 150
Heater Hose Carries hot coolant to and from the heater core. 36 25
Heater Hose Clamp Secures the heater hose to the heater core and engine 12 $2-$10
Heater Hose Connector Allows the heater hose to attach to other components in the cooling system, such as the water pump or heater core. 48 $5 – $20
Heater Relay Provides power to the heater blower motor and controls its speed 12 $15-$50
Heater Switch Allows the driver to control the temperature and airflow of the vehicle’s heating system N/A $15-$50
Heater Thermostat Regulates the temperature of the engine coolant. 36 20
High Beam Headlight Provides increased illumination for driving at night or in low-visibility conditions 6-12 $20-$100
High Pressure Fuel Pump Boosts fuel pressure for direct injection engines 24 $200-$500
Hinge Pins Provide the pivot points for door, hood, and trunk hinges. 36 10
Hobbs Switch Activates the engine’s fuel pump when the vehicle’s speed reaches a certain threshold. 24 $20-$50
Hood Covers and provides access to the engine compartment. 60 300
Hood Hinge Allows the hood to swing open and closed. 48 50
Hood Insulation Reduces engine noise and heat transfer into the cabin 36 $50-$200
Hood Latch Secures the hood in the closed position. 36 25
Hood Latch Cable Releases the primary hood latch to allow the hood to open 12 $15-$50
Hood Latch Striker The metal component that the hood latch engages with to securely close the hood. 36 $10-$30
Hood Release Cable Allows the driver to remotely open the hood. 36 20
Horn Produces an audible warning signal to alert other drivers and pedestrians. 24 50
Horn Assembly Provides an audible warning signal to alert other drivers and pedestrians. 120 $20 – $100
Horn Button Activates the vehicle’s horn. 12 15
Horn Fuse Protects the vehicle’s horn circuit from electrical overloads. 12 $1-$5
Horn Relay Provides power to the horn when activated. 24 20
Horn Wiring Harness Provides the electrical connections for the vehicle’s horn. 60 30
Hose Clamp Secures fluid-carrying hoses to their respective fittings, preventing leaks. 24 $1 – $5
Hub Bearing Assembly Allows the wheel to rotate freely while supporting the vehicle’s weight. 48 $100 – $300
Hydraulic Brake Booster Amplifies the force applied to the brake pedal, making it easier to stop the vehicle. 60 $200-$500
Hydraulic Brake Fluid Transmits pressure from the brake pedal to the brake calipers. 12 20
Hydraulic Brake Hose Carries brake fluid from the master cylinder to the brake calipers. 36 30
Hydraulic Brake Line Provides rigid metal tubing to route brake fluid. 72 50
Hydraulic Brake Master Cylinder Generates and distributes hydraulic pressure to the brake calipers. 36 100
Hydraulic Clutch Cylinder Actuates the clutch mechanism when the clutch pedal is pressed. 60 $50 – $150
Hydraulic Parking Brake Caliper Applies the parking brake to the rear wheels. 48 150
Hydraulic Shock Absorber Dampens suspension movement to provide a smooth ride. 36 100

Descriptions

Hail Shield
A durable plastic or metal cover that is installed over the vehicle’s roof and hood to shield it from hail. It can be either permanently mounted or removable, depending on the vehicle’s design.
Halfshaft
The halfshaft is a critical component of the vehicle’s drivetrain, connecting the differential to the wheel hubs and enabling smooth, safe operation.
Halogen Bulb
A type of electric light bulb that uses a tungsten filament enclosed in a glass envelope filled with halogen gas. Halogen bulbs produce a brighter, whiter light than traditional incandescent bulbs.
Halogen Headlight Bulb
Halogen bulbs use a tungsten filament surrounded by halogen gas, resulting in a whiter, more intense light output that improves visibility and safety.
Handbrake
Also known as the parking brake, the handbrake is a lever or pedal that mechanically engages the rear brakes to prevent the vehicle from moving when parked. It is an important safety feature.
Hardtop Convertible
Hardtop convertibles offer the open-air experience of a traditional convertible with the added security and weatherproofing of a rigid roof structure.
Harmonic Balancer
A pulley attached to the front of the crankshaft that helps dampen vibrations and stabilize the engine’s power output
Hatch Latch
Heater Outlet Hose
Hatch Lift Cylinder
Hydraulic cylinder that provides the lifting force to open and close the rear hatch or tailgate. May need replacement if the cylinder loses pressure or the mechanism becomes worn over time.
Hazard Light Flasher
Electronic module that controls the flashing pattern of the hazard warning lights. Helps alert other drivers to a disabled or stopped vehicle on the road.
Hazard Switch
A dashboard switch that blinks all turn signal lights simultaneously to warn other drivers of a hazard or emergency
Head Gasket
Thin metal or composite gasket that sits between the engine block and cylinder head. Keeps engine fluids separated and ensures proper compression and combustion within the cylinders.
Headlight
The front-mounted lights on a vehicle that provide primary illumination for driving. They are typically powered by the vehicle’s electrical system and can be either halogen, xenon, or LED bulbs.
Headlight Adjuster
A mechanism that enables the driver to change the angle or direction of the headlights, ensuring they are properly aligned and providing optimal illumination for safe driving.
Headlight Bulb
The replaceable light bulb that is installed inside the headlight assembly to produce the light that illuminates the road ahead. Headlight bulbs can be halogen, xenon, or LED.
Headlight Fuse
A small, replaceable fuse that is part of the vehicle’s electrical system. It is designed to blow and interrupt the circuit if too much current flows through the headlight wiring, preventing damage to the electrical components.
Headlight Housing
The outer shell or frame that surrounds and holds the headlight bulb, reflector, and lens. The headlight housing is typically made of durable plastic or metal and is an integral part of the vehicle’s front-end design.
Headlight Leveling System
An electronic system that uses sensors to detect the vehicle’s pitch and roll, and then adjusts the angle of the headlights to maintain optimal illumination of the road ahead, regardless of changes in load or driving conditions.
Headlight Relay
An electrical component that switches the high-current power to the headlights on and off, based on a signal from the vehicle’s lighting control module or headlight switch. The relay helps protect the lighting circuit from overload.
Headlight Switch
The dashboard-mounted control that the driver uses to turn the headlights on and off, as well as select other lighting modes, such as high beams or fog lights. The headlight switch is part of the vehicle’s lighting control system.
Headlight Wiring Harness
The bundle of wires and connectors that runs from the vehicle’s lighting control module or fuse box to the headlight assemblies, delivering the necessary power and control signals to the headlights.
Headliner
The soft, padded material that is installed on the inside of the vehicle’s roof, providing a finished, insulated, and soundproofed surface. The headliner can be made of various materials, such as fabric, vinyl, or suede.
Heat Shield
The heat shield is a critical safety feature that prevents heat-sensitive parts from becoming damaged or creating a fire hazard.
Heater Blower Motor
An electric fan that is part of the vehicle’s heating, ventilation, and air conditioning (HVAC) system. The blower motor pulls air through the heater core and distributes the warm air into the passenger compartment.
Heater Control Module
An electronic control unit that monitors and adjusts the heater core, blower motor, and other heating components to maintain the desired cabin temperature
Heater Control Valve
A valve that is part of the vehicle’s heating system, responsible for controlling the amount of hot coolant that flows through the heater core. This allows the driver to adjust the temperature of the air being blown into the cabin.
Heater Core
A small heat exchanger that is part of the vehicle’s heating system. The heater core is located in the HVAC system and uses the hot engine coolant to warm the air that is then blown into the passenger compartment.
Heater Hose
The flexible rubber hoses that transport the heated engine coolant from the engine to the heater core and back, allowing the heat to be distributed throughout the vehicle’s cabin.
Heater Hose Clamp
A metal or plastic clip that tightens the connection between the heater hose and the heater core or engine to prevent leaks
Heater Hose Connector
Small fitting, typically made of plastic or metal, that the heater hose connects to in order to circulate heated coolant from the engine to the heater core.
Heater Relay
An electrical switch that activates the heater blower motor when the heater is turned on, allowing air to flow through the heating system
Heater Switch
The dashboard control that lets the driver adjust the settings of the heating and ventilation system
Heater Thermostat
A valve that is installed in the engine’s cooling system, responsible for controlling the flow of coolant to maintain the optimal operating temperature. The heater thermostat helps ensure the engine and heater core receive the appropriate amount of heated coolant.
High Beam Headlight
Brighter headlight bulbs that shine further down the road to improve visibility when driving in dark or poorly lit areas
High Pressure Fuel Pump
An electric pump that increases the fuel pressure to the appropriate level for direct fuel injection, improving engine efficiency and performance
Hinge Pins
The metal pins that are installed in the hinge components, allowing the doors, hood, and trunk to swing open and closed smoothly. Hinge pins must be lubricated periodically to prevent wear and binding.
Hobbs Switch
The Hobbs switch is a safety feature that prevents the fuel pump from running unnecessarily, improving fuel efficiency and reducing the risk of fire or explosion.
Hood
The hinged, front-opening panel on a vehicle that covers the engine and other components, allowing access for maintenance and repair. The hood is an important structural and styling element of the vehicle’s design.
Hood Hinge
The mechanical pivot joint that connects the hood to the vehicle’s body, enabling the hood to be opened and closed. Hood hinges are typically made of metal and must be lubricated to ensure smooth operation.
Hood Insulation
A sound-deadening material installed under the hood to minimize engine noise and help maintain a comfortable cabin temperature
Hood Latch
The locking mechanism that keeps the vehicle’s hood firmly shut, preventing it from opening unexpectedly while driving. The hood latch is an important safety feature that must be properly maintained and adjusted.
Hood Latch Cable
The cable that connects the hood release lever inside the vehicle to the primary hood latch mechanism, enabling the driver to open the hood
Hood Latch Striker
The hood latch striker is a critical safety feature that keeps the hood from flying open unexpectedly while the vehicle is in motion.
Hood Release Cable
The flexible cable that runs from the interior hood release lever or button to the hood latch, enabling the driver to unlock and open the hood from inside the vehicle.
Horn
The electrical device that generates a loud, distinctive sound to alert others of the vehicle’s presence, typically used to warn of potential hazards or accidents. Horns are an important safety feature required on all road-going vehicles.
Horn Assembly
Includes the horn itself, which is an electromechanical device that produces the honking sound, as well as the mounting hardware and wiring to connect it to the vehicle’s electrical system.
Horn Button
The button or switch, usually located on the steering wheel, that the driver presses to sound the vehicle’s horn. The horn button is connected to the horn’s electrical circuit, allowing the driver to quickly and easily alert others.
Horn Fuse
The horn fuse is a small but important safety component that prevents damage to the horn system and potential fire hazards in the event of a short circuit.
Horn Relay
An electrical component that switches the high-current power to the vehicle’s horn on and off, based on a signal from the horn button or other control. The horn relay helps protect the horn’s electrical circuit from overload.
Horn Wiring Harness
The bundle of wires and connectors that runs from the vehicle’s fuse box or horn relay to the horn itself, delivering the necessary power and control signals to sound the horn when activated.
Hose Clamp
Metal or plastic band that tightens around a hose to hold it firmly in place on a pipe, connector, or other component. Helps maintain a tight seal and prevent hoses from coming loose.
Hub Bearing Assembly
Integrated unit that includes the wheel bearing and the mounting flange or hub that the wheel mounts to. Enables smooth, low-friction rotation of the wheel.
Hydraulic Brake Booster
The hydraulic brake booster uses engine vacuum or an electric pump to increase the pressure in the brake lines, reducing the amount of force required from the driver.
Hydraulic Brake Fluid
A specialized fluid used in the hydraulic brake system of a vehicle. It is responsible for transferring the force applied to the brake pedal through the brake lines to the brake calipers, causing the pads to grip the brake discs and slow or stop the vehicle.
Hydraulic Brake Hose
The flexible, high-pressure hoses that connect the brake master cylinder to the individual wheel brake calipers, allowing the brake fluid to flow and apply the brakes when the pedal is pressed.
Hydraulic Brake Line
The network of steel or copper tubing that runs from the brake master cylinder to each wheel’s brake calipers, delivering the hydraulic pressure needed to actuate the brakes.
Hydraulic Brake Master Cylinder
The central component of the hydraulic brake system that converts the driver’s foot pressure on the brake pedal into hydraulic pressure, which is then distributed through the brake lines to the individual wheel brake calipers.
Hydraulic Clutch Cylinder
Hydraulic piston that translates the driver’s input on the clutch pedal into movement of the clutch disc, disengaging the engine from the transmission.
Hydraulic Parking Brake Caliper
A specialized brake caliper that is part of the vehicle’s parking brake system, responsible for gripping the rear brake discs or drums to hold the vehicle in place when parked. It is typically operated by a hand lever or electronic control.
Hydraulic Shock Absorber
Also known as a damper, the hydraulic shock absorber is a component of the vehicle’s suspension system that controls the rate of spring compression and rebound, helping to smooth out bumps and vibrations for a comfortable ride.

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