Cheap Mercedes-Benz SLK Sump

The SLK R171 generation ran from 2004 to 2011, so both years sit within the same generation, but fitment depends primarily on the engine code rather than the year alone — a sump from a 200K engine won't cross to a 350 unit, for example. Check your engine code on your V5 or via a VIN check and match it to the donor car's engine code before buying. If the codes match, ask the breaker to confirm against your registration as mounting details can vary mid-run.

The R170 ran from 1996 to 2004 and the R171 from 2004 to 2011 — these are distinct generations with different engine families, so sumps are very unlikely to interchange across that boundary. Even where an engine code looks similar between the two, confirm with the breaker against both registrations before purchasing. Never assume generational compatibility without a direct part-number check.

Trim level as a label doesn't affect sump fitment, but the SLK 200 Kompressor and SLK 55 AMG use entirely different engines, so the sumps are not interchangeable — this is an engine-code difference, not a trim difference. The SLK 55 AMG uses a high-output V8 with its own sump design, whereas the 200 Kompressor uses a four-cylinder unit. Always match by engine code, which you'll find on your V5 or via a VIN check, and ignore the badge name when sourcing the part.

For most applications the sump itself sits on the engine rather than the gearbox, so gearbox type is less critical for the sump than the engine code is. That said, some engine variants were paired exclusively with certain transmissions and may have had minor differences in oil pan design or ancillary positioning, so confirm with the breaker against your registration to be sure. Your engine code, found on the V5 or a VIN check, is the most important detail to supply.

No — diesel and petrol engines are entirely different units with different sumps, and the two will not interchange. The SLK range in the UK was predominantly petrol, so confirm your fuel type and engine code from your V5 before approaching a breaker. Supplying your engine code to the breaker is the quickest way to ensure you're quoted the correct part.

2003 falls within the R170 generation (1996–2004) and 2004 marks the start of the R171, so you're looking at a cross-generation boundary where fitment is unlikely but cannot be ruled out without checking engine codes on both vehicles. Name the engine codes from both V5 documents and put them to the breaker, who can check part numbers directly. We'd recommend confirming with the breaker against both registrations before committing, as this boundary is a known compatibility risk.