Description
This Siemens air mass sensor is a genuine BMW intake management component for BMW E36, E39, E38 and Z3 models. The primary OEM number is 1703275, with 5WK9600 as the matching hardware reference. It is designed as the airflow measuring sensor mounted in the intake tract to support stable engine operation and accurate load calculation.
Its job is to measure the amount of air entering the engine so the control unit can adjust fuel delivery and maintain the correct air-fuel balance. A properly working sensor helps support smooth idle, clean throttle response, efficient combustion and consistent engine performance across normal driving conditions.
Common signs of a faulty unit include rough idle, hesitation under acceleration, poor fuel economy, uneven power delivery, hard starting or an engine warning light related to air metering. On some vehicles, incorrect airflow readings can also lead to mixture faults, stalling or sluggish response during part-throttle driving.
This is a used original part, removed from a vehicle and tested before sale. Match the exact OEM number 1703275 and hardware number 5WK9600 before ordering. Professional installation is recommended, and intake leaks, wiring faults or adaptation procedures should be checked where relevant during fitting.
Returns accepted only for genuine faults — faulty on arrival, not as described, or wrong part supplied — requested within 14 days, with all 3 anti-tamper stickers intact. No returns for change of mind, incorrect installation, coding/programming, or buyer compatibility errors; checking compatibility (OEM number, firmware, vehicle) is the buyer’s responsibility. Full policy: https://giantparts.eu/refund-and-returns/
