BMW E90 Parts Catalogue - BMW Car Aftermarket

The BMW E90 3 Series features a range of parts, each serving specific functions that contribute to the vehicle's overall performance, safety, and luxury. Here is an overview of key parts and their functions:

Engine Components: The engine is the heart of the vehicle. Essential parts include the cylinder head, which houses the intake and exhaust valves; the pistons, which move within the cylinders to convert fuel energy into mechanical power; and the crankshaft, which translates the pistons' linear motion into rotational energy. The camshaft controls the opening and closing of the valves, and the oil pump ensures engine components are properly lubricated. Turbocharged models include a turbocharger to increase power by forcing extra air into the combustion chamber.

Transmission System: This system manages power delivery from the engine to the wheels. Clutch assemblies (in manual versions) allow the driver to engage and disengage the power connection, while torque converters (in automatics) manage this process without direct manual control. Gearboxes change gears to optimize power and fuel efficiency.

Brake System: Comprising brake pads, rotors (discs), and calipers, the braking system slows or stops the vehicle. ABS (Anti-lock Braking System) components prevent wheel lockup, maintaining steering control during sudden stops. Brake lines and the master cylinder ensure hydraulic pressure is distributed effectively to the brakes.

Suspension and Steering Components: Shock absorbers and struts cushion the vehicle from road impacts, ensuring a smoother ride. Control arms and bushings connect the suspension to the chassis, facilitating controlled movement. The steering rack and tie rods allow the driver to steer the car with precision. Anti-roll bars help minimize body roll during cornering.

Electrical System: The alternator charges the battery and powers electrical components when the engine runs. The battery stores energy for starting the engine and operating electronics. Starter motors initiate engine operation. ECUs (Electronic Control Units) manage functions such as engine performance, transmission, and safety features.

Cooling System: The radiator dissipates heat from the coolant, while the water pump circulates coolant through the engine. The thermostat regulates coolant flow based on temperature, ensuring optimal engine performance. Cooling fans provide additional airflow when needed.

Fuel System: The fuel pump delivers fuel from the tank to the engine. Fuel injectors spray fuel into the combustion chamber for efficient burning. The fuel filter removes impurities to protect the engine, and the fuel rail ensures proper fuel pressure distribution.

Exhaust System: The exhaust manifold collects exhaust gases from the engine cylinders and channels them to the catalytic converter, which reduces harmful emissions. The muffler minimizes noise, while oxygen sensors monitor and adjust air-fuel ratios for optimal combustion.

Air Conditioning and HVAC System: The A/C compressor pressurizes the refrigerant, which flows through the condenser and evaporator to cool the cabin. The blower motor circulates air, while the cabin air filter ensures the air inside the vehicle is clean.

Interior Components: The dashboard includes controls and displays essential information. Seats provide comfort and support, while the infotainment system offers navigation and audio functions. Climate control systems manage cabin temperature. Various switches and controls for windows, lights, and mirrors are integrated for driver convenience.

Body Parts: Fenders, bumpers, hood, and doors protect the vehicle and contribute to its aerodynamics and safety. Mirrors, grilles, and headlights improve functionality and visibility, while the trunk lid and rear bumper offer access to cargo space and protect the rear of the car.

Safety Features: Airbags deploy during a collision to protect occupants. Seatbelt pre-tensioners tighten the seatbelt on impact to secure passengers. Crash sensors detect sudden deceleration and trigger safety mechanisms. Dynamic Stability Control (DSC) and traction control help maintain vehicle stability.

Wheels and Tires: The rims provide structural support for the tires, which ensure traction and vehicle stability. TPMS (Tire Pressure Monitoring System) sensors alert the driver of low tire pressure, contributing to safety.

Glass and Wipers: The windshield and side windows provide visibility and protection. Wiper blades clear rain and debris, supported by the wiper motor and washer fluid pump to maintain visibility during poor weather.

Accessories and Trim: These include floor mats, roof racks, spoilers, and body trim, which enhance comfort, utility, and the vehicle's appearance.

Each part of the BMW E90 has a specific function to ensure the car operates smoothly, provides safety, and maintains the brand's luxury standards. Regular maintenance and checks help keep these components functioning effectively.