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eBay£145.95Visit shop Hella 8ET009149-531 Mass Air Flow Sensor Fits BMW 3 4 5 6 7 Series X3 X4 X5 X6
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The Hella Mass Air Flow (MAF) Sensor 8ET 009 149-531 is an essential precision component designed for BMW owners who require OE-quality reliability for their engine's air intake system. This sensor is ideal for maintaining optimal combustion efficiency and fuel economy in specific BMW 5 Series Gran Turismo, 6 Series Gran Coupe, and X6 models, though it requires precise compatibility verification against your vehicle's existing sensor specifications prior to purchase to ensure a successful installation.
| Model Part Number | 8ET 009 149-531 |
|---|---|
| Brand | HELLA |
Yes, it is standard for replacement units to include the necessary seals, but verify the package contents upon arrival.
While the sensor is "plug-and-play," it is highly recommended to reset the ECU adaptations using a diagnostic tool so the car learns the new data parameters immediately.
If the sensor is physically damaged or internally faulty, cleaning will not help. Only attempt to clean it if there is light surface contamination, using only professional-grade MAF sensor cleaner spray.
Compare the MPN (8ET 009 149-531) with your current sensor's part number or check your vehicle’s build sheet against the Hella compatibility catalog.
An incorrect installation can cause vacuum leaks or faulty readings, resulting in poor engine performance, increased fuel consumption, or the vehicle entering 'limp mode'.
Use an OBD-II scanner to clear existing error codes and reset the ECU's learned fuel trim adaptations.
Verify that the 5-pin connector is fully seated and that the sensor is oriented correctly in the intake housing.
Check for air leaks in the intake boots or hoses downstream from the sensor, as unmetered air will cause the system to run lean.
Before beginning installation, ensure the engine is completely cool to prevent burns and to avoid electrical shorts. Always disconnect the negative battery terminal before unplugging the old sensor. When installing, ensure the mounting surface is clean and the O-ring or gasket is properly seated to prevent air leaks, which can introduce unmetered air and lead to poor performance.
Compatibility Note: Always verify your current part number against the 8ET 009 149-531 specification. Use a dedicated MAF sensor cleaner only if absolutely necessary; never touch the internal sensing element with tools or fingers, as skin oils can permanently damage the sensor's accuracy.
