Mercedes C Class W204 Parts & Spares

Fitment guides, buying advice and live UK eBay prices for the Mercedes C Class W204 — always confirm against your reg or VIN.

The Mercedes C Class W204 is a familiar sight on UK roads, which is good news when something needs replacing: parts are plentiful and prices stay competitive. Owners search most often for headlight, exhaust and water pump — but the model spans different engines, trims and, on most generations, a mid-life facelift, so the same-looking part isn't always the right one.

Use the guides below to match a part to your exact Mercedes-Benz, then check live prices from trusted UK eBay sellers. Every part page lists what to confirm before you buy, so you avoid the classic wrong-part return.

Most-searched Mercedes C Class W204 parts

HeadlightView prices ›

Check halogen vs xenon AND left/right (driver/passenger). Pre-facelift and facelift lenses differ — match your reg.

ExhaustView prices ›

Systems are usually sold in sections (front pipe, centre, back box) — confirm which section(s) you need and whether your car has a single or twin exit.

Water PumpView prices ›

Belt-driven on TDIs (do it with the cambelt). Some petrols are chain or electric pumps — confirm type for your engine code.

Timing BeltView prices ›

Belt routing varies by engine code (1.6 TDI vs 2.0 TDI vs 1.4 TSI). Match your engine code, not just the model.

Timing ChainView prices ›

Chain-driven engines still need matching to the exact engine code — guides, tensioner and sprockets vary, and getting timing marks wrong causes serious engine damage.

Clutch KitView prices ›

Match kit size/spline count to your engine and gearbox code — high-torque diesels often need an upgraded kit, not the standard one.

How to check a part fits your Mercedes C Class W204

The same Mercedes-Benz can be sold with several engines and trims, and most generations get a mid-life facelift that changes lights, bumpers and trim. Before you buy:

Full walkthrough: how to check a part fits your exact car.

Buying Mercedes C Class W204 parts: genuine, aftermarket or used

Genuine and OEM parts are the safe pick for safety-critical or hard-to-reach components and cars you’re keeping long term. For routine wear items, a reputable aftermarket brand is usually as good for far less. And for pricey assemblies on an older Mercedes C Class W204 — alternators, starters, lights, panels — a well-rated used or reconditioned part can be the sensible choice. See OEM vs aftermarket vs used for the full rundown.

All Mercedes C Class W204 parts

HeadlightMercedes C Class W204ExhaustMercedes C Class W204Water PumpMercedes C Class W204Timing BeltMercedes C Class W204Timing ChainMercedes C Class W204Clutch KitMercedes C Class W204Dual Mass FlywheelMercedes C Class W204TurboMercedes C Class W204DPF FilterMercedes C Class W204EGR ValveMercedes C Class W204AlternatorMercedes C Class W204Starter MotorMercedes C Class W204Wheel BearingMercedes C Class W204Shock AbsorberMercedes C Class W204Suspension ArmMercedes C Class W204Control ArmMercedes C Class W204WishboneMercedes C Class W204Brake DiscsMercedes C Class W204Brake PadsMercedes C Class W204Brake CaliperMercedes C Class W204ABS SensorMercedes C Class W204Fuel InjectorMercedes C Class W204Fuel PumpMercedes C Class W204RadiatorMercedes C Class W204ThermostatMercedes C Class W204Coil PackMercedes C Class W204Glow PlugsMercedes C Class W204Spark PlugsMercedes C Class W204Catalytic ConverterMercedes C Class W204GearboxMercedes C Class W204IntercoolerMercedes C Class W204Intake ManifoldMercedes C Class W204Drive ShaftMercedes C Class W204CV JointMercedes C Class W204Tail LightMercedes C Class W204Wing MirrorMercedes C Class W204Window RegulatorMercedes C Class W204Wiper MotorMercedes C Class W204Heater BlowerMercedes C Class W204Throttle BodyMercedes C Class W204Mass Air Flow SensorMercedes C Class W204Oxygen SensorMercedes C Class W204Crankshaft SensorMercedes C Class W204Oil PumpMercedes C Class W204Power Steering PumpMercedes C Class W204Engine MountMercedes C Class W204

Mercedes C Class W204 parts — common questions

How do I know a part fits my Mercedes C Class W204?

Start with your registration to filter obvious mismatches, then confirm the details that matter: your engine code (for anything attached to the engine), your trim level, and whether your car is pre-facelift or facelift. The surest check is to match the part number stamped on the unit you're replacing.

Where's the best place to buy Mercedes C Class W204 parts?

For most owners, eBay's UK sellers offer the widest choice and the keenest prices, covering genuine, aftermarket and used parts. Buy through eBay's checkout so you're covered by the Money Back Guarantee, and favour sellers with strong feedback and a clear returns policy.

Should I buy genuine Mercedes-Benz parts or aftermarket?

It depends on the part. Genuine or OEM makes sense for safety-critical or hard-to-reach components and cars you're keeping long term. For routine wear items — brakes, filters, suspension arms — a reputable aftermarket brand is usually as good for far less.

Are used Mercedes C Class W204 parts safe to buy?

They can be a smart choice for expensive assemblies like alternators, starters, lights and body panels, especially on an older Mercedes C Class W204. Check the seller's feedback, confirm the part number matches, and prefer sellers who state condition and offer a returns window.