Get quotes for a used or replacement Mercedes-Benz CLK catalytic converter. Genuine second hand parts from UK vehicle dismantlers - free request, breakers with stock reply direct.
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No two catalytic converters are quite the same across different vehicles, so getting the specifics right matters when you buy used, second hand or a replacement. Answer a few quick questions below and breakers will only quote if they have the exact matching part in stock:
The CLK ran across two generations — the W208 (1997–2002) and the W209 (2002–2009) — and these are entirely different platforms with different exhaust systems, so a catalytic converter from a W208 will not fit a W209 or vice versa. Within each generation, fitment is driven by engine code and fuel type rather than the generation label alone, so you need to match the specific engine. Always confirm the exact part against your registration with the breaker before buying.
This is a generation boundary year — the W208 ended in 2002 and the W209 began in 2002–2003 — so cars either side of that cut-off use different exhaust architecture and the converter is very unlikely to interchange. Even within the W209, the correct cat is determined by engine code, so a 2002 and a 2003 car with different engines would still not share the part. Confirm the engine code and registration details with the breaker to be certain.
Trim level — whether your CLK is Elegance, Avantgarde, Sport or an AMG variant — does not determine catalytic converter fitment; what matters is the engine code and fuel type. The exception worth noting is that AMG-engined cars (such as those with the 5.0 or 5.5 V8) use a different exhaust system entirely compared with the standard four- or six-cylinder cars, so the engine must still match. Confirm the exact engine code with the breaker rather than relying on trim name alone.
Diesel CLKs carry both a catalytic converter (a diesel oxidation catalyst) and, on later W209 models, a diesel particulate filter — these are separate components doing different jobs. Whether your specific car has a combined unit or separate cat and DPF depends on the engine variant and model year, and interchange specifics for diesel cats and DPFs are strong confirm-with-breaker territory. Give the breaker your registration and engine code so they can identify exactly which part you need.
A visually similar catalytic converter from a different engine variant or emissions era can look identical but may not seal, connect, or perform correctly — and fitting the wrong cat can cause an MOT emissions failure. Petrol CLK cats are matched to the specific engine code and the emissions standards of the production year, so appearance alone is not a safe guide to fitment. Always cross-reference the engine code and year with the breaker before purchasing a used unit.
Used catalytic converters from breakers can be a cost-effective option for a CLK, but condition matters — a cat from a high-mileage car may have a degraded substrate that passes visual inspection but causes an MOT emissions failure once fitted. Ask the breaker about the donor car's mileage and any known running issues, and check that the engine code matches yours exactly. Fitment compatibility and part condition are both things to confirm directly with the breaker against your registration.