Mercedes-Benz SL Air Flow Meter Replacement Parts

Yes, many SL variants use a mass air flow (MAF) sensor as part of the engine management system, and this applies across several generations from the R129 onwards. However, fitment depends entirely on the engine: petrol engines in the SL range generally use a MAF sensor, but you should confirm your specific engine code (from your V5 or a VIN check) before ordering, as not every engine variant uses the same unit or the same type of metering system.

Almost certainly not — the R129 ran from 1989 to 2001 and the R230 from 2001 to 2012, and these generations use entirely different engine families, management systems, and sensor specifications. The engine code is the critical detail here; even within a single generation the correct MAF sensor varies by engine, so treat R129 and R230 parts as non-interchangeable and always confirm against your registration with the breaker.

Yes, significantly — these badges reflect different engine codes (for example the M272 in the SL350, the M273 in the SL500, and the M156 in the SL63 AMG), and each engine uses a different air flow meter specification. Trim level and badge alone are not enough; always supply the breaker with your full engine code, which you can find on your V5 or via a VIN check, to ensure the correct unit is sourced.

The R230 ran from 2001 to 2012 with a facelift in 2006, and while two cars sharing the same engine code within that generation have the best chance of compatibility, ancillary or connector changes can occur across a facelift year. Name the engine code to the breaker and ask them to confirm against your specific registration, as mid-production changes are exactly the kind of detail that varies and cannot be guaranteed from year alone.

The air flow meter is matched to the engine, not the gearbox, so in principle gearbox type does not change which MAF sensor is required. That said, the Mercedes-Benz SL was predominantly automatic across its modern generations, so if you have an unusual drivetrain configuration it is worth mentioning to the breaker simply to help them verify the full engine management context.

Condition matters for reliability but the critical fitment factor is always the engine code, not the age or price of the donor vehicle. There is also a practical caution with air flow meters on Mercedes-Benz engines: confirm with the breaker whether the unit from the donor vehicle may require any ECU or management system considerations specific to your car, as this is something they can advise on against your registration rather than something that can be stated as a blanket rule.