Parts Glossary

Removes contaminants from incoming air before it enters the engine, protecting internal components from damage.

Releases compressed air when the throttle closes suddenly, preventing compressor surge and protecting turbocharger.

Ride on camshaft lobes to actuate valves, reducing friction and wear in the valve train.

Controls the opening and closing of valves through precisely shaped lobes, synchronized with crankshaft rotation.

Links the pistons to the crankshaft, transferring force from combustion to create rotational motion.

Converts the up-and-down motion of pistons into rotational motion that drives the wheels. Critical for engine operation.

Sits atop the engine block, containing valves, spark plugs, and combustion chambers where fuel ignites.

Allows checking of engine oil level and condition, essential for proper engine maintenance.

Routes high-voltage electricity from the coil to the correct spark plug in older ignition systems.

The engine's computer that manages fuel injection, ignition timing, and numerous other functions for optimal performance and emissions.

The main structure of the engine that houses cylinders and other internal components. Provides the foundation for the entire engine assembly.

Seal casting holes in the engine block and provide pressure relief if coolant freezes and expands.

Spray precisely metered amounts of fuel into cylinders or intake ports, controlled by the engine ECU.

Maintains proper fuel pressure in the fuel system, ensuring consistent injector performance.

Distributes fuel under high pressure to all fuel injectors, maintaining consistent fuel delivery.

Seals the junction between cylinder head and engine block, preventing leaks of coolant, oil, and combustion gases.

Transform battery voltage into the high voltage needed to create sparks at the spark plugs.

Distributes air or air-fuel mixture evenly to all cylinders, optimizing combustion efficiency.

Individual passages in the intake manifold that direct air to each cylinder, designed for optimal flow characteristics.

Cools compressed air from the turbocharger before it enters the engine, increasing air density for more power.

Detects abnormal combustion (engine knock), allowing the ECU to adjust timing to prevent engine damage.

Transfer motion from the camshaft to the valves, maintaining proper valve clearance and timing.

Support the crankshaft within the engine block, allowing smooth rotation while handling enormous forces.

Measures the mass of air entering the engine, allowing the ECU to calculate proper fuel delivery for optimal combustion.

Reduces engine oil temperature, particularly important in high-performance or heavily loaded engines.

Removes contaminants from engine oil, protecting components from wear and extending oil life.

Reservoir at the bottom of the engine that collects and stores engine oil for circulation through the lubrication system.

Circulates engine oil throughout the lubrication system, ensuring all moving parts receive adequate lubrication.

Monitor oxygen levels in exhaust gases, enabling the ECU to maintain optimal air-fuel ratio for efficiency and emissions.

Recirculates crankcase gases back into the intake system, reducing emissions and preventing pressure buildup.

Seal the gap between pistons and cylinder walls, preventing combustion gases from escaping and controlling oil consumption.

Move up and down within cylinders, compressing air-fuel mixture and transferring combustion force to the crankshaft.

Pivot to transfer camshaft motion to valves, providing mechanical advantage in valve actuation.

Enable connecting rods to rotate smoothly on the crankshaft while withstanding high loads and speeds.

Create the electric spark that ignites the compressed air-fuel mixture in petrol engines, initiating combustion.

Mechanically driven compressor that forces more air into the engine, boosting power output.

Controls the amount of air entering the engine based on accelerator pedal input, regulating engine power output.

Monitors throttle valve position, informing the ECU of driver power demands for proper fuel and ignition control.

Control crankshaft end-to-end movement, maintaining proper positioning within the engine block.

Synchronizes crankshaft and camshaft rotation, ensuring valves open and close at the correct time relative to piston position.

Protects timing components from dirt and debris while containing engine oil in the timing area.

Drive the timing belt or chain, maintaining precise synchronization between crankshaft and camshaft.

Uses exhaust gases to spin a turbine that compresses intake air, significantly increasing engine power output.

Return valves to their closed position after being opened by the camshaft, ensuring proper sealing of combustion chambers.

Control the flow of air-fuel mixture into cylinders and exhaust gases out. Open and close in precise timing with engine operation.

Controls turbocharger boost pressure by diverting excess exhaust gases away from the turbine.

Automatically selects appropriate gears based on speed and load, using hydraulic or electronic control systems.

Shafts that connect differential to wheels, transmitting rotational power to drive the vehicle.

Friction disc that connects engine to transmission in manual cars, allowing smooth engagement and disengagement of power.

Actuates the clutch release bearing when the clutch pedal is pressed, disengaging the clutch.

Rubber covers that protect CV joints from dirt and retain lubricating grease.

Constant velocity joints that allow driveshafts to flex and articulate while maintaining smooth power transfer.

Allows wheels on the same axle to rotate at different speeds while cornering, dividing engine torque between them.

Secures differential to chassis while isolating vibration and managing drivetrain loads.

Transfers rotational power from transmission to differential in rear or all-wheel drive vehicles.

Uses two separate clutches for odd and even gears, enabling extremely fast gear changes without interrupting power delivery.

Provides rotational inertia to smooth engine operation and serves as the mounting surface for the clutch or torque converter.

Mechanical or electronic connection between gear lever and transmission, translating driver input into gear changes.

Drive axles in front-wheel or independent rear suspension vehicles, incorporating CV joints for articulation.

Allows driver to manually select gears to match engine speed with road speed, providing direct control over power delivery.

Clamps the clutch disc against the flywheel, transmitting engine torque to the transmission.

Pushes against pressure plate fingers to release clutch pressure when pedal is pressed.

Electronically controlled valves in automatic transmissions that direct hydraulic fluid to actuate gear changes.

Match gear speeds in manual transmissions, enabling smooth gear engagement without grinding.

Fluid coupling in automatic transmissions that transfers engine power to transmission while allowing slippage at low speeds.

Isolates transmission vibration from chassis while securely positioning the transmission.

Reduce body roll during cornering by connecting left and right suspension, improving handling stability.

Flexible pivot points connecting control arms to steering knuckles, allowing steering and suspension movement.

Rubber or polyurethane mounts that cushion suspension component connections, isolating vibration and noise.

Primary suspension springs that absorb impacts and support vehicle weight while allowing wheel movement.

Connect wheel hub to chassis, controlling wheel position and movement while allowing suspension travel.

Supports steering linkage on passenger side in older steering systems, maintaining proper geometry.

Stacked steel plates that serve as springs, commonly used in trucks and older vehicles for durability and load capacity.

Secure suspension components to chassis, providing attachment points for various suspension parts.

Converts rotary motion from steering box to linear motion in recirculating ball steering systems.

Provides hydraulic pressure to assist steering effort, making wheel turning easier for the driver.

Control spring oscillations after impacts, preventing bouncing and maintaining tire contact with road.

Houses steering shaft connecting wheel to rack, often including collapse mechanism for safety.

Shock absorber for steering system that reduces wheel shimmy and kick-back, particularly in off-road vehicles.

Stores hydraulic fluid for power steering system, often integrated with pump or mounted separately.

Hubs that mount wheels and connect to suspension and steering components, pivoting for steering.

Converts rotational steering wheel input into lateral wheel movement through a gear mechanism.

Integrated suspension units combining shock absorber and spring mounting in a structural component.

Secondary frame that supports suspension and drivetrain components, isolating them from main chassis.

Limit suspension travel in compression or extension, preventing damage from over-travel.

Connect steering rack to steering knuckles, transmitting steering input to wheels and allowing adjustment of wheel alignment.

Electronic control unit that prevents wheel lockup during hard braking by modulating brake pressure.

Uses engine vacuum to amplify brake pedal force, reducing effort needed for effective braking.

Rotating metal discs attached to wheels that brake pads clamp onto, dissipating kinetic energy as heat.

Cylindrical components in drum brake systems that shoes press against from the inside to create braking force.

Stores brake fluid for hydraulic system, allowing level checking and fluid replenishment.

Transport brake fluid under pressure from master cylinder to wheel brakes, using rigid lines and flexible hoses.

Friction material that clamps against brake discs to slow the vehicle, designed for heat resistance and consistent performance.

Driver-operated lever that activates the braking system, converting foot pressure into hydraulic force.

Curved friction material in drum brakes that expands outward to contact drum and create stopping force.

House brake pistons that squeeze pads against rotors, converting hydraulic pressure into friction.

Converts mechanical pedal force into hydraulic pressure distributed to all brake calipers.

Mechanical system that holds vehicle stationary when parked, typically acting on rear wheels.

Monitor individual wheel rotation speeds, providing data to ABS system to prevent lockup.

Monitor wheel speeds to enable antilock braking system operation.

Monitors crash sensors and deploys airbags in milliseconds during a collision.

Generates electricity while engine runs, charging battery and powering electrical systems.

Stores electrical energy to start engine and power systems when engine is off, acting as voltage stabilizer.

Heavy-duty connections that transmit high current between battery and vehicle electrical system.

Manages various body electrical functions including lighting, locks, and convenience features.

Bright red lights that illuminate when brakes are applied, warning following drivers.

Join wiring harness components, allowing serviceability while maintaining electrical connections.

Inform ECU of exact engine position for precise ignition and injection timing.

Primary computer managing engine functions including fuel injection, ignition timing, and emissions systems.

Low-mounted lights designed to improve visibility in fog, rain, or snow without causing glare.

Central distribution point for electrical circuits with protective fuses for each circuit.

Protective devices that prevent electrical overload and switches that control high-current circuits.

Provide return path for electrical current to battery negative terminal.

Primary forward lighting using halogen, xenon, or LED technology for night driving visibility.

Amber flashing lights that signal intended direction changes to other road users.

Cabin lighting for passenger convenience, typically activating when doors open.

Illuminate rear number plate for legal visibility requirements and law enforcement identification.

Measure air pressure or mass flow for ECU to calculate proper fuel delivery.

Electric motor that cranks engine to begin combustion process, drawing high current from battery.

Red rear lights that make vehicle visible from behind, particularly important in low visibility.

Monitor coolant, intake air, and other temperatures for proper engine management.

Computer that manages automatic transmission gear changes based on various sensor inputs.

Controls alternator output to maintain proper charging voltage, protecting electrical components.

Organized bundles of wires connecting all electrical components throughout the vehicle.

Pressurizes refrigerant gas, enabling heat transfer that cools cabin air.

Fan that circulates heated or cooled air through cabin ventilation system.

Removes dust, pollen, and pollutants from air entering cabin ventilation system.

Radiator-like component that cools and condenses refrigerant gas into liquid.

Transport coolant between engine, radiator, and heater core, designed to withstand high temperatures and pressure.

Draw or push air through radiator when vehicle speed is insufficient for natural airflow cooling.

Inside cabin component where refrigerant evaporates, absorbing heat and cooling air.

Reservoir that accommodates coolant expansion and contraction with temperature changes.

Regulates refrigerant flow into evaporator, controlling cooling capacity.

Directs fan airflow through radiator efficiently, preventing air recirculation.

Small radiator inside cabin that uses hot coolant to provide heating for passengers.

Dashboard interface allowing temperature, fan speed, and air distribution adjustment.

Heat exchanger that dissipates engine heat into atmosphere via airflow and coolant circulation.

Pressurizes cooling system to raise coolant boiling point while acting as pressure relief valve.

Filters and stores refrigerant while removing moisture from AC system.

Adjustable flaps that mix hot and cold air to achieve desired cabin temperature.

Valve that regulates coolant flow to maintain optimal engine operating temperature.

Circulates coolant through engine block, cylinder head, and radiator to maintain proper temperature.

Reduces harmful emissions by chemically converting pollutants into less harmful gases.

Flexible mounting system that supports exhaust while allowing movement and vibration isolation.

Collects exhaust gases from cylinders and directs them into exhaust system.

Removes contaminants from fuel before it reaches injectors, protecting sensitive fuel system components.

Float-operated sensor in fuel tank that reports fuel level to dashboard gauge.

Transport fuel from tank to engine, using pressure-resistant materials for safety and reliability.

Electric pump submerged in fuel tank that delivers pressurized fuel to injection system.

Stores fuel supply for engine, designed with safety features to prevent leaks in crashes.

Seal exhaust system connections, preventing gas leaks and maintaining system integrity.

Primary noise reduction device that quiets exhaust gases through sound-absorbing chambers.

Monitor exhaust gas composition before and after catalytic converter for emissions control.

Secondary muffler that cancels specific exhaust sound frequencies for refined exhaust note.

Final section of exhaust directing gases away from vehicle, often styled for appearance.

Manufacturer and model identification emblems, contributing to vehicle branding.

Hinged panel providing access to engine compartment while forming front body shape.

External and internal mechanisms for opening doors, increasingly incorporating keyless entry.

External mirrors providing side and rear visibility, often with adjustment and heating features.

Hinged panels providing cabin access, incorporating safety structures, windows, and trim.

Protective structures designed to absorb low-speed impacts and house sensors, lights, and grilles.

Front openings allowing airflow to radiator while defining vehicle's visual identity.

Electric motors that engage and release door locks, controlled by key fob or switches.

Paint protection film being applied Paint protection film (PPF, also called clear bra, clear film or clear paint film) is a thermoplastic urethane and often self-healing film applied to painted surfaces of a new or used car in order to protect the paint from stone chips, bug splatters, and minor abrasions. This film is also used on airplanes, RVs, cell phones, electronics, screens, motorcycles, and many other areas. Paint protection film is OEM approved by virtually all car manufacturers.

Glass panel providing rearward visibility, often including defrost elements.

Interior mirror providing central rear visibility, may include auto-dimming features.

Upper body panel providing weather protection and contributing to structural rigidity.

Various rubber components preventing water, dust, and air leakage throughout body.

Tempered glass panels in doors and body pillars for visibility and ventilation.

Rear access panel to cargo area, often incorporating lighting and latch mechanisms.

Rubber seals around doors and windows preventing water and air infiltration.

Mechanisms that raise and lower door windows, either manual or electric.

Laminated glass front window providing visibility while contributing to structural strength.

Body panels covering wheel arches, protecting from road debris and completing body shape.

Inflatable cushions throughout cabin that deploy in crashes to protect occupants.

Floor coverings providing sound insulation and finished appearance.

Central cabin structure housing storage, controls, and cup holders.

Trim covering door interiors, housing controls and speakers.

Adjustable seating providing comfort and support, increasingly featuring multiple adjustment motors and heating.

Lever or electronic interface for selecting transmission gears.

Adjustable head supports reducing whiplash injury risk in rear impacts.

Dashboard interfaces for adjusting cabin temperature and air distribution.

Dashboard display showing speed, engine RPM, fuel level, and warning indicators.

Various cabin lighting including dome, map, and ambient lighting systems.

Manual or electronic control engaging parking brake system.

Floor-mounted controls for accelerator, brake, and clutch (in manual transmissions).

Fabric covering interior roof, providing finished appearance and sound insulation.

Restraint system securing occupants during collisions, featuring pretensioners and load limiters.

Rails allowing fore-aft seat adjustment for different driver sizes.

Gauges displaying vehicle speed and engine rotation speed for driver monitoring.

Driver's primary control interface, increasingly housing controls for various vehicle functions.

Hinged panels blocking sun glare from windshield and side windows.

Central display controlling entertainment, navigation, and vehicle settings.

Central mounting points for wheels, often integrating bearings and ABS sensors.

Emergency equipment for temporary tyre replacement, including spare tyre, jack, and tools.

Sensors monitoring individual tyre pressures, alerting driver to under-inflation.

Rubber components providing grip, cushioning, and vehicle support, crucial for safety and handling.

Precision bearings allowing wheels to rotate smoothly while supporting vehicle weight.

Fasteners securing wheels to hubs, requiring specific torque specifications.

Metal structures mounting tyres and attaching to vehicle hubs, available in various sizes and styles.

System preventing wheel lockup during hard braking, maintaining steering control.

Multiple inflatable restraints throughout cabin protecting occupants in various collision types.

Various fastening hardware holding vehicle components together with specific torque requirements.

Hydraulic fluid transmitting brake pedal force to calipers, requiring specific boiling point characteristics.

Liquid mixture circulating through cooling system, preventing freezing and corrosion while managing temperature.

Accelerometers detecting impacts to trigger airbag deployment and safety responses.

Lubricating fluid reducing friction between moving engine parts, also providing cooling and cleaning.

Combustible liquid (petrol, diesel, or alternative) providing energy for engine operation.

Sealing components preventing fluid and gas leaks between mating surfaces throughout vehicle.

Hydraulic fluid enabling power-assisted steering, reducing effort needed to turn wheels.

Flexible mounting components isolating vibration and noise from various vehicle systems.

Computerized system preventing loss of control by selectively braking wheels and reducing power.

System preventing wheel spin during acceleration by reducing power or applying brakes.

Specialized lubricant and hydraulic medium for transmission operation, cooling, and protection.