BMW M3 Emission Control Sensors
Emission control sensors are a popular pick among BMW M3 owners here, covering model years from 1988 through 2025. The range includes oxygen sensors, mass air flow sensors, air/fuel ratio sensors, knock sensors, and throttle position sensors — in direct-fit OE replacement and universal forms across every M3 generation. Pick your BMW M3's year above to narrow the list to emission control sensors with confirmed fitment. Every part shown is checked against our vehicle data.
DENSO 234-9129 Air-Fuel Ratio Sensor 4-Wire Direct Fit Heated 13.78" Wire
NGK 25612 NTK OE Identical Oxygen Sensor 4-Wire Heated O2 Sensor
Representative Photo, actual item may vary
NGK 25565 NTK Oxygen Sensor O2 Sensor Direct Fit Upstream 4-Wire
DENSO 234-9142 Air-Fuel Ratio Sensor 4-Wire Direct Fit Heated O2 Sensor
Weapon-R 310-111-101 Secret Weapon MAF Adapter Kit Air Flow Sensor Flange
DENSO 234-4799 OE Identical Heated Oxygen Sensor 4-Wire Direct Fit 35.43" Lead
What's here for your BMW M3
- Oxygen sensors — manifold, rear, and mid-pipe positions, including gasket-equipped fitments
- Mass air flow sensors — direct-fit and remanufactured OE-replacement units
- Air/fuel ratio sensors — direct-fit replacements for a range of M3 model years
- Ignition knock (detonation) sensors — OE-style replacements
- Throttle position sensors — direct-fit and universal options
The widest selection here comes from DENSO, Walker Products, Bosch, and Delphi, each offering a broad range of sensor types and fitments for the BMW M3. Other categories BMW M3 owners shop for: BMW M3 Springs and Suspension Parts, BMW M3 Exhaust and Tail Pipes and BMW M3 Brake Pads and Shoes, or browse all BMW M3 parts and accessories.