Cheap Mercedes-Benz SL Brake Caliper

The SL has run across several distinct generations — the R107 (to 1989), R129 (1989–2001), R230 (2001–2012), and R231 (2012–2020) — and brake calipers do not cross between these generations, as each uses different hub and carrier dimensions. Even within a generation, engine size plays a significant role, since larger-engined variants such as the SL55 AMG or SL63 AMG were fitted with uprated, physically larger calipers compared to the SL350. Always confirm the exact part against your registration with the breaker before purchasing.

Within the same generation, engine size genuinely affects brake specification on the SL — the SL500 and higher-displacement variants typically carried larger or differently rated calipers than the SL350, so these are not reliably interchangeable. Trim level alone does not affect caliper fitment, but displacement does, so focus on matching the engine size rather than the trim name when sourcing a used caliper. Confirm the exact part number against your registration with the breaker to be sure.

Yes, brake calipers are side-specific — the nearside (NS, passenger side) and offside (OS, driver side) calipers are mirror images of each other and are not interchangeable. Always tell the breaker which side you need when requesting a quote, and double-check this against your own vehicle before fitting. Getting the side wrong is one of the most common and easily avoided mistakes when buying used calipers.

The R230 generation ran from 2001 to 2012 and received a facelift in 2008, and while the body changes were significant, brake caliper fitment is more closely tied to engine size and axle specification than to facelift year. That said, whether the calipers are identical across the pre- and post-facelift R230 is something you should confirm with the breaker against your exact registration, as mid-generation running gear updates can occur without being widely documented. Do not assume a pre-2008 caliper will fit a post-2008 car without that check.

AMG variants of the SL — such as the SL55 AMG on the R230 or the SL63 AMG on the R231 — were factory-fitted with significantly uprated braking systems, so their calipers are generally not the same as those on the standard SL350 or SL500 of the same generation. The AMG badge here reflects a genuine mechanical difference, not just a cosmetic one, so matching the AMG specification matters. Tell the breaker your exact model designation and registration so they can source the correct caliper for your variant.

No — front and rear calipers on the SL are entirely different components designed for different axle loads and braking forces, and they cannot be swapped between axles. When sourcing a used caliper, make sure you specify both the axle position (front or rear) and the side (NS or OS) to the breaker. Supplying your registration will help the breaker pull up the correct specification quickly and avoid any mismatch.