Second Hand Mercedes-Benz CLK Clutch Master Cylinder

Only manual-gearbox CLKs have a clutch master cylinder — if your CLK has an automatic gearbox (the five-speed 722.6 or the seven-speed 722.9 unit, which was standard on most UK CLKs), there is no clutch pedal and therefore no clutch master cylinder at all. The vast majority of CLKs sold in the UK were automatics, so before searching for this part it is worth double-checking your gearbox type, which will be on your V5 or a VIN check. If you do have a manual CLK — a genuine six-speed manual was available on some variants — then a clutch master cylinder is a real fitment and the guidance below applies.

The single most useful detail is your engine code, which you can find on your V5 or via a VIN check — this matters far more than the badge or year alone because Mercedes used the same engine codes across the CLK C208 (1997–2002) and CLK C209 (2002–2009) generations, and the mechanicals often followed engine family rather than generation. You should also confirm your gearbox type and fuel type (petrol or diesel), as these affect which clutch system was fitted. Give the breaker your full engine code and registration and let them cross-reference stock against your specific vehicle.

The CLK C208 ran from 1997 to 2002 and the C209 from 2002 to 2009, and although some engine codes carried across the generation change, the hydraulic clutch system can differ between these two distinct platforms. You should treat C208 and C209 parts as non-interchangeable unless a breaker can confirm otherwise against both registrations. Name the generation boundary clearly when contacting a breaker, and ask them to verify the part number matches your engine code rather than relying on year alone.

Trim level makes no difference to clutch master cylinder fitment — Elegance, Avantgarde, and AMG variants all use the same hydraulic clutch components for a given engine code and gearbox type. The trim primarily affects interior specification, alloy wheel style, and cosmetic body details, none of which are relevant to a mechanical clutch component. What matters is your engine code, whether the car is manual, and which generation it is — supply those details to the breaker and ignore the trim badge for this part.

The C209 received a facelift in 2005 that brought styling updates and some equipment changes, but for a mechanical part like the clutch master cylinder what matters is the engine code rather than the facelift date. That said, ancillary mounting or hydraulic line changes can sometimes occur mid-production without a formal model update, so you should confirm with the breaker against your specific registration rather than assuming a pre-2005 and post-2005 part are identical. Give the breaker your engine code and full VIN and let them check their stock accordingly.

The CLK 220 CDI is a diesel variant and was available with a manual gearbox, in which case it would have a clutch master cylinder — but again this depends entirely on whether your specific car is a manual rather than an automatic. If you have confirmed you have a six-speed manual, supply your engine code (the OM611 or OM646 family depending on year) to the breaker as this is the key matching detail for sourcing the correct part. Do not assume a diesel part will interchange with a petrol unit even where the car looks identical externally.