Second Hand Mercedes-Benz SL Inlet Manifold

Yes, inlet manifolds do exist on the Mercedes-Benz SL, but only on petrol-engined variants — every SL generation has been petrol-powered, so this applies across the range. The inlet manifold sits atop the engine and manages airflow into the combustion chambers, and all petrol engines require one. If you have been quoted for a diesel SL, that would be unusual and worth double-checking, as Mercedes never offered the SL in diesel form in the UK market.

No — the R129 and R230 are entirely different generations with different engine families, so their inlet manifolds are not interchangeable. The engine code is what governs fitment, and even engines sharing a similar displacement across these two generations were substantially redesigned. Always match the inlet manifold to your specific engine code, which you can find on your V5C or via a VIN check, rather than to the model generation alone.

Both the 2006 and 2009 SL350 fall within the R230 generation (2001–2011) and share the M272 V6 engine, so fitment is likely compatible. However, Mercedes did make running production changes during this generation, so ancillary fittings or vacuum ports on the manifold may differ slightly between build dates — confirm against your registration with the breaker before buying. Always cross-reference your engine code (M272 for the SL350) to give the breaker the most accurate matching information.

Trim level itself does not affect inlet manifold fitment, but the SL350 and SL500 have different engines — the M272 V6 and M273 V8 respectively — so their inlet manifolds are completely different parts and will not interchange. What matters here is the engine code, not the badge or trim designation. Make sure you tell the breaker your exact engine code rather than just the trim name, as this is the most reliable way to ensure the correct part.

The R231 generation ran from 2012 to 2022 and received a facelift in 2016, but whether the inlet manifold changed across that boundary depends on your specific engine variant and engine code. Name the boundary to the breaker — pre-facelift (2012–2016) versus post-facelift (2016–2022) — and ask them to confirm compatibility against your registration, as ancillary and mounting details can change mid-production without a formal generation change. Your engine code from your V5C is the single most useful detail to supply.

No — the SL63 AMG uses AMG's hand-built M157 or M178 biturbo V8 engine depending on generation, while the SL550 uses the M278 twin-turbo V8, and these are fundamentally different engines with different inlet manifolds. AMG variants have distinct engine internals and breathing systems that do not transfer to standard variants. Always match the manifold to your exact engine code, and give the breaker that code to avoid any costly mismatch.