Cheap Mercedes-Benz SL Fuel Injection Pump

No – the R129 (1989–2001) and R230 (2001–2012) are entirely separate generations with different engines, management systems, and pump designs, so parts do not cross between them. The engine code is the key detail here: even if two cars share a similar badge like SL320 or SL500, the underlying hardware changed completely at the generation boundary. Always confirm the engine code from your V5 or a VIN check before buying.

The R230 ran from 2001 to 2012 and received a facelift around 2006, which can bring ancillary and mounting changes that affect whether a pump from an early car swaps straight into a later one. The most reliable way to check is to match the engine codes exactly – if both cars share the same engine code and fuel type, there is a good chance the core pump is compatible, but confirm the specific part number with the breaker against your registration before buying.

No – the SL350 and SL500 carry different engines (a six-cylinder and a V8 respectively), so their fuel injection pumps are not interchangeable regardless of the generation or year. The badge tells you the engine family, but the engine code on your V5 is the precise reference a breaker needs to pull the right pump. Always supply your full engine code when requesting a quote.

No – trim level has no bearing on fuel injection pump fitment for the SL; what matters is the engine code, fuel type (petrol or diesel), and gearbox type. You may find cosmetic differences such as interior spec or alloy style between trim variants, but the mechanical pump is determined entirely by the drivetrain. Focus on matching the engine code exactly rather than worrying about trim designation.

Both years sit within the same R230 generation (2001–2012), so if the engine codes and fuel types match, the pump is likely to be compatible. However, there can be ancillary or mounting changes during a production run that are not always obvious, so you should confirm the specific part number with the breaker against both registrations before committing. Supplying your engine code upfront will make this check much quicker.

The engine code is the single most important detail – a pump from a matching engine code and fuel type is your starting point for correct fitment. However, whether a used pump requires ECU pairing or immobiliser coding to your specific vehicle is something you must confirm with the breaker, as this depends on the exact system fitted and cannot be stated as a blanket rule. A good breaker will be able to advise you on this when you provide your registration and engine code.