Alfa Romeo Giulia Air Flow Meter Replacement Parts

Yes, the Giulia uses a mass air flow (MAF) sensor on its petrol engines, including the 2.0-litre turbo four-cylinder found in the standard and Veloce variants, and on the 2.9-litre twin-turbo V6 in the Quadrifoglio. The diesel engines (the 2.2-litre MultiJet units) also use a MAF sensor as part of their fuelling and emissions management. So the part does genuinely exist across the Giulia range, though the exact sensor spec varies by engine code.

The Alfa Romeo Giulia launched in 2016 and the generation ran through to the present without a fundamental platform change, but there was a facelift around 2020 that introduced some updated componentry. Whether the MAF sensor crosses that boundary depends primarily on your engine code rather than the year alone, so confirm the engine code on your V5 or via a VIN check and give it to the breaker to cross-reference against their donor car. Never assume year-to-year fitment without verifying the engine code matches.

Trim level does not drive MAF sensor fitment — the engine code does. A Veloce and a Super both fitted with the 2.0-litre turbo petrol and sharing the same engine code would use the same sensor, regardless of the Veloce's sportier spec. The Quadrifoglio has a completely different engine (the 2.9 V6 biturbo) so its MAF sensor is not interchangeable with the four-cylinder cars, and you should always confirm engine codes with the breaker regardless of trim name.

Gearbox type is a secondary consideration rather than a primary one, but it can influence the engine tune and associated sensor calibration on some variants, so it is worth mentioning to the breaker alongside your engine code. The engine code remains the single most important detail — get it from your V5 logbook or a VIN check and supply it when requesting a quote. If the breaker asks for gearbox type as well, provide it, as it may help them narrow down the correct specification.

No, the 2.2-litre MultiJet diesel and the petrol engines use different MAF sensors calibrated to their respective fuelling systems, so you must source a sensor from a diesel donor car with a matching engine code. The diesel Giulia came in different power outputs (such as 150 and 180 bhp variants) which may have different engine codes, so confirm your exact code from the V5 rather than going by power output alone. Always give the breaker your engine code so they can match it precisely to their dismantled vehicle.

Whether a used MAF sensor requires any ECU pairing or coding to your specific vehicle is something you should confirm directly with the breaker against your registration, as this can vary and is not something that can be stated as a blanket rule here. In many cases a direct-replacement MAF sensor is a plug-and-play fit, but on some modern Alfa Romeo engine management systems there may be calibration steps required. Ask the breaker and, if in doubt, consult a specialist Alfa Romeo independent or main dealer before purchasing.