Used Alfa Romeo 159 Air Flow Meter

Yes, but only on petrol-engined 159s — petrol engines use a mass air flow (MAF) sensor to measure incoming air, whereas the diesel variants (the JTDm engines) use a different air management strategy and do not use a conventional air flow meter in the same way. If you have a diesel 159 and are chasing an air-related fault, you are more likely looking for a boost pressure sensor, EGR component, or throttle body rather than a MAF sensor. Always confirm which engine code you have from your V5 or a VIN check before searching.

The Alfa Romeo 159 was sold in the UK with petrol engines including the 1.8 (engine code 939A4), 2.2 JTS (939A5), and 3.2 V6 (939A0), and the engine code is the single most important detail to supply when sourcing a used MAF sensor. Even where sensors may look physically similar, the calibration is matched to the specific engine's airflow characteristics, so fitting one from the wrong engine code can cause running problems or fault codes. Always tell the breaker your exact engine code, which you can find on your V5 logbook or via a VIN check.

The Alfa Romeo 159 was produced from 2005 to 2011 as a single generation with a facelift around 2008, and while the core engine codes remained consistent across that run, there were mid-production detail changes to ancillaries and mounting arrangements that could affect whether an early sensor fits a late car directly. The safest approach is to match not just the engine code but also the model year, and then confirm with the breaker against your registration before purchasing. Never assume a direct swap across the 2008 facelift boundary without that verification.

Both generations share the same engine code family, which is a good starting point, but whether the MAF sensor is physically and electrically identical across the 2008 facelift boundary is something you should confirm with the breaker against your specific registration — minor wiring loom or mounting changes could affect direct fitment. Give the breaker your engine code, year, and registration so they can cross-reference from their own vehicle rather than relying on badge or year alone.

No, trim level does not affect MAF sensor fitment on the 159 — Lusso, Ti, Distinctive, and Veloce are specification grades that relate to interior equipment and cosmetic features, not engine hardware. What matters is the engine code, which is the same across trim levels for a given engine variant. You may encounter cosmetic differences on a part-out car from a higher trim, but the MAF sensor itself is determined entirely by the engine, not the badge on the boot.

This is something you should confirm with the breaker and your own mechanic rather than assume either way — some engine management systems can store learned values associated with a sensor, and whether the 159 requires any ECU adaptation after a MAF swap is not something to state definitively here. A diagnostic reset or adaptation procedure after fitting is common good practice on many modern vehicles regardless. Ask the breaker whether the sensor they are supplying came from a running car, and have a diagnostic tool available when fitting.