Mercedes-Benz SL Fuel Injector Replacement Parts

All Mercedes-Benz SL models sold in the UK use fuel injection, so yes, fuel injectors are a genuine fitment part across every generation of the SL. The range has always been petrol-injected, spanning naturally aspirated straight-sixes, V8s, and V12s, plus the AMG-tuned forced-induction variants like the SL55 AMG and SL63 AMG. There are no carburettor or diesel SL variants in the UK market lineup, so if you need an injector for your SL, you are looking for the right part.

Almost certainly not — the R129 ran from 1989 to 2001 and the R230 from 2001 to 2012, and they use entirely different engine families with different fuel rail designs, injector connectors, and flow rates. The engine code is the critical detail here: for example, an M119 V8 from the R129 is a completely different unit from the M113 or M273 used in the R230, so the injectors are not interchangeable. Always confirm the engine code from your V5 or a VIN check and supply it to the breaker to make sure you get the correct injector.

Both are R230-generation cars, but the 2006 facelift brought engine revisions, with the pre-facelift SL500 using the M113 5.0-litre V8 and the post-facelift SL500 moving to the M273 5.5-litre V8 — these engines use different injectors and the parts are not interchangeable. Even within the same generation, the engine code change at the facelift means a straight swap cannot be assumed. Supply your exact engine code to the breaker and ask them to confirm compatibility against your registration before purchasing.

Yes, it matters significantly — AMG variants like the SL55 AMG (M113K supercharged) and SL63 AMG (M156 naturally aspirated) use different engines with different injector specifications compared to the standard SL500 or SL350, and injectors are not interchangeable across those engine families. Trim level in the cosmetic sense — such as interior finish or AMG body styling fitted to a non-AMG engine — does not affect injector fitment at all. Always lead with the engine code when speaking to a breaker, as that is the definitive guide to which injector you need.

No — the SL350 and SL500 use different engines (for example the M272 V6 versus the M113 or M273 V8 in the R230 generation), and fuel injectors are specific to the engine, not the model badge or body. The injector flow rate, connector type, and fitting differ between these units, so fitting the wrong one is likely to cause running problems. Always match the injector to the engine code rather than the model name, and confirm the code with the breaker before ordering.

Fuel injectors themselves are not typically coded to the ECU in the way that some modules are, but on certain Mercedes-Benz engines the injection system calibration or adaptations stored in the ECU can be a factor in smooth running after a swap. Whether any additional coding or adaptation is needed for your specific engine and model year is something you should confirm with the breaker or a Mercedes-Benz specialist against your registration, as this can vary and we cannot state it as fact for every combination. A good independent specialist or dealer can clear adaptations and recode as needed after fitting.