Mercedes-Benz CLK Brake Master Cylinder Replacement Parts

Yes, the CLK is a rear-wheel-drive car and all variants use a conventional hydraulic braking system with a brake master cylinder mounted on the bulkhead, usually paired with the brake servo. This applies across the full CLK range regardless of engine or body style, so you should have no trouble sourcing one from a breaker.

The W208 and W209 are distinct generations with different bodyshells and braking system layouts, so parts from the earlier car are very unlikely to cross directly to the later one. You should treat these as separate searches and confirm the generation with the breaker using your registration number before agreeing a purchase. Never assume fitment across this generational boundary.

Yes, engine size can matter here because larger-engined CLKs — such as the CLK 500 or CLK 55 AMG — often run uprated braking systems to cope with the extra power and weight, which can mean a different master cylinder specification compared to a CLK 200 or CLK 220. Always tell the breaker your exact engine size and ideally your registration so they can match the right unit. Don't assume a cylinder from a four-cylinder car will suit a V8 variant.

Trim level alone — Elegance, Avantgarde, or standard AMG badging on the W209 — does not change the brake master cylinder fitment; what matters is the engine variant and generation. The breaker may supply a cylinder that looks slightly different due to age or supplier variation, but if the engine size and generation match, trim is not a fitment concern. Confirm the engine size with the breaker rather than worrying about which trim badge your car carries.

Both a 2004 and a 2008 CLK fall within the W209 generation (2002–2009), so there is a reasonable chance of compatibility, but the W209 received updates during its production run and brake system specifications can vary. Confirm the exact engine size on both donor and recipient cars and ask the breaker to cross-reference part numbers before you commit. This is one of those cases where checking against your registration is strongly recommended rather than going on year alone.

The W209 CLK received a facelift in 2005, primarily affecting exterior styling and interior trim rather than the core running gear, but it is still worth mentioning the facelift to your breaker as some underbonnet specifications were quietly updated during this period. For the brake master cylinder specifically, engine size remains the more important variable than pre- or post-facelift status. Ask the breaker to confirm against your registration to be safe, particularly if the donor car is from a different side of the 2005 update.