Mercedes-Benz SLK Sill Replacement Parts

The SLK ran across three generations: the R170 (1996–2004), the R171 (2004–2011), and the R172 (2011–2016). The sill is a body panel tied to the specific platform and bodyshell, so a sill from one generation will not fit another — always match the generation code to your car. The SLK was only ever produced as a two-seat roadster throughout all three generations, so body style is consistent, but the pressing changes between generations mean cross-generation fitment is not possible.

Both a 2006 and a 2009 SLK fall within the R171 generation (2004–2011), so they share the same basic bodyshell and the sill should be the same pressing. That said, confirm with the breaker against your registration in case there were any mid-generation panel changes Findapart breakers can check on their systems. Generally speaking, within-generation R171 sills are your target.

No — the R170 (1996–2004) and R171 (2004–2011) are entirely different platforms with different bodyshells, and the sills are not interchangeable. Always source a sill matched to your generation, and use your registration when getting quotes from breakers to make sure the part is confirmed to your car.

Engine and trim level do not affect sill fitment on the SLK — the bodyshell and sill pressing are the same across the 200, 250, 300, 350, and 55 AMG variants within any given generation. Where you may notice differences are cosmetic additions such as AMG body styling or side skirt extensions on sportier trims, which can sit over or alongside the structural sill. Make sure you clarify with the breaker whether you need the bare sill panel, any trim strips, or the full side skirt assembly.

The R171 received a facelift during its production run, but whether the facelift involved changes to the sill pressing specifically is not something that can be confirmed with certainty here. Name the generation (R171) when speaking to a breaker and confirm against your registration — a good breaker will be able to check whether pre- and post-facelift sills are the same part number before you commit.

The sill — sometimes called the rocker panel — is the structural metal section that runs along the bottom of the car between the front and rear wheel arches, forming part of the bodyshell. On the SLK, this is distinct from any decorative side skirt or sill trim strip that may be bolted or clipped over it, though both are sometimes loosely called a sill. When searching on Findapart, be clear with the breaker about whether you need the metal sill panel itself, the plastic trim cover, or both, as these are separate parts priced and sourced differently.