Mercedes-Benz ML Air Flow Meter Replacement Parts

Yes, petrol-engined ML variants use a mass air flow (MAF) sensor as part of their engine management, and some diesel variants also use one depending on the specific engine. However, not every engine fitted to the ML uses a MAF sensor — certain diesel configurations rely on other pressure and temperature sensors instead, so the first step is to confirm your fuel type and engine code. Your engine code is on your V5 or available via a VIN check, and giving it to the breaker is the most reliable way to confirm whether your engine uses a MAF sensor at all.

These two years sit in different generations — the W163 ran from 1997 to 2005, while the W164 ran from 2005 to 2011 — so these are fundamentally different vehicles with different engine families and the MAF sensors are not interchangeable between them. Even within a single generation, fitment is driven by the engine code rather than the year alone, so a sensor from a same-generation ML with a different engine code may still not be correct. Always match by engine code and confirm with the breaker against your registration before buying.

Within the W164 generation the engine code is the primary guide — two W164 MLs built in the same year but with different engines will need different MAF sensors. Year can still matter within a generation if Mercedes revised ancillary components or mounting arrangements during production, but whether that affects your specific vehicle is something to confirm with the breaker against your registration. Giving the breaker your exact engine code alongside the year gives them the best chance of supplying the right part.

The badge names (ML320, ML350, ML500 and so on) reflect different engine variants, so in most cases they will require different MAF sensors — matching by engine code is far more reliable than matching by badge alone, as the same badge has occasionally been used across revised engine specifications over the years. Where two variants happen to share the same engine code, the MAF sensor may well be the same unit, but you should still confirm this with the breaker. Providing your engine code from the V5 or a VIN check removes the guesswork entirely.

No, trim level does not affect MAF sensor fitment — Sport, SE, AMG Line and any other trim designations are cosmetic and equipment-level distinctions that have no bearing on the engine management hardware. What matters is the engine code, fuel type, and generation, not the trim badge on the car. Tell the breaker your engine code and they will be able to match the sensor correctly regardless of trim.

This is an important question and one worth raising directly with the breaker before you buy, as ECU pairing and immobiliser-related coding requirements can vary and are not something we can confirm as fact here. Some engine management components on Mercedes vehicles may require adaptation via diagnostic software after fitting, and a breaker familiar with ML engines should be able to advise you. It is also worth checking with a Mercedes-specialist garage or diagnostics technician before fitting a used MAF sensor to understand what, if anything, is needed for your specific engine.