Description
Original Bosch air mass sensor for BMW E46, E39 and E38 models, supplied under OEM number 13712247002 with Bosch reference 0928400314. This sensor is fitted in the intake system and is designed as a genuine manufacturer part for accurate airflow measurement in compatible BMW applications.
Its job is to measure the mass of air entering the engine so the control unit can calculate fuel delivery correctly. A healthy air mass sensor helps maintain smooth running, stable idle, clean acceleration and balanced engine efficiency across changing load and temperature conditions.
Common signs of a faulty unit include hesitant acceleration, uneven idle, reduced power, increased fuel consumption, smoke under load or engine management fault codes related to airflow readings. Because this sensor directly affects mixture control, a failing unit can also contribute to rough running and inconsistent throttle response.
This is a used original part, removed from a vehicle and tested before sale. Please match 13712247002 and 0928400314 exactly before ordering. Professional installation is recommended, and coding, programming or adaptation may be required where appropriate after 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/
