Used Mercedes-Benz SL Timing Chain

The SL spans several distinct generations — the R107 (to 1989), R129 (1989–2001), R230 (2001–2012), and R231 (2012–2020) — and the timing chain is engine-specific, so crossing a generation boundary almost certainly means a different engine family and an incompatible chain. Even within a generation, different engine codes use different chains, so the engine code is what matters, not the generation badge alone. Always confirm the engine code from your V5 or a VIN check and supply it to the breaker before ordering.

All mainstream Mercedes-Benz SL variants across the major generations — R107, R129, R230, and R231 — use timing chains rather than a cambelt, so a used timing chain is a genuine and relevant part to source for this model. The chain arrangement and the number of chain runs can vary between engine families, so confirming your exact engine code ensures you get the correct assembly. Your engine code is stamped on the block and also appears on your V5 or via a VIN check.

Both of those cars sit within the R230 generation (2001–2012), and if they share the same engine code the timing chain components are likely to be compatible, but there was a facelift in 2008 and ancillary details around the timing system can change mid-production. Confirm the engine codes on both donor and recipient match exactly, then check with the breaker against your specific registration to be certain before buying.

Trim level in the SL range broadly reflects the engine fitted, so an SL350, SL500, and SL55 AMG are in practice different engine variants and will use different timing chains — this is one case where the badge does matter, but only because it indicates the engine family underneath. The actual fitment is determined by the engine code, not the trim name itself, so two cars both badged SL500 but with different engine codes could still need different parts. Always cross-reference the engine code rather than relying on the trim badge alone.

The R129 ran from 1989 to 2001 and was offered with a range of engines from six-cylinder to V12, and the timing chain differs across those engine families, so an R129-to-R129 swap is not automatically safe. Your engine code is the definitive reference point — supply it to the breaker and ask them to match it against the donor vehicle's code rather than matching on generation or displacement alone. Never assume fitment based on the generation name without verifying the engine code.

The AMG variants use bespoke AMG-built engines — the SL63 AMG uses a different engine code to the standard SL models in the R230 and R231 generations, and the SL65 AMG has a twin-turbocharged V12 that is different again, so the timing chain arrangements are not shared with the standard range. Sourcing a used timing chain for an AMG variant means you need to match on the AMG-specific engine code, which your breaker will need to confirm against the donor car. Supply your engine code from the V5 or a VIN check to avoid an expensive mismatch.