Air Mass Sensor 4Pin Oval (Hajus) (Diesel M47N 2 M57N) (BMW 1 Series E81/E87 / 3 Series E46 / E90 / 5 Series E60 / X3 E83 / X5 E53 / E70) is listed as an auto-part option. Confirm fitment, part number and compatibility before purchase, especially where vehicle-specific matching is required.
Air Mass Sensor 4Pin Oval (Hajus) (Diesel M47N 2, M57N) (BMW 1 Series E81/E87 / 3 Series E46 / E90 / 5 Series E60 / X3 E83 / X5 E53 / E70) is a critical sensor designed for diesel engines in select BMW models. This sensor measures the amount of air entering the engine, providing essential data to the engine control unit (ECU) for optimal fuel injection and combustion.
Fitting a BMW 1 Series E81/E87, 3 Series E46/E90, 5 Series E60, X3 E83, or X5 E53/E70 with diesel M47N 2 or M57N engines, this unit features a 4-pin oval connector configuration. When replacing your existing air mass sensor, verify the pin count and connector shape to ensure compatibility.
The sensor plays a vital role in maintaining engine efficiency and performance by accurately gauging air intake. When testing or troubleshooting engine management issues related to air flow or fuel mixture, this part is often inspected or replaced. Note that coding, calibration, and fault repair are not guaranteed with this sensor, so additional engine diagnostics may be required after installation.
- Sensor type: Air mass sensor with 4-pin oval connector
- Compatible with specific diesel BMW engines M47N 2 and M57N
- Use as a direct replacement for matching connector type and model applications
Compare your old sensor’s pin layout and part profile to this listing before purchase. If uncertain, consider submitting a Request a Part to confirm fitment or consult the sales desk for technical advice.
Need help matching this item to your vehicle? Use Vehicle Parts Finder, Request a Part or Platinum Sales Desk with your VIN, engine number, part number or clear photos.