BMW 540i Emission Control Sensors
This page brings together emission control sensors for the BMW 540i, covering model years 1992–2023. The range includes oxygen sensors, mass air flow sensors, knock sensors, air/fuel ratio sensors and throttle position sensors — available as direct-fit OE replacements and universal options. Pick your BMW 540i's year above to narrow the list to emission control sensors with confirmed fitment. Every part shown is checked against our vehicle data.
DENSO 234-4201 Universal Heated Oxygen Sensor 4-Wire 11.77" Lead
NGK 25565 NTK Oxygen Sensor O2 Sensor Direct Fit Upstream 4-Wire
What's here for your BMW 540i
- Oxygen sensors — manifold-position, direct-fit and universal styles
- Mass air flow sensors — OE replacement and remanufactured options
- Ignition knock (detonation) sensors — direct-fit replacements
- Air/fuel ratio sensors — direct-fit OE-style units
- Throttle position sensors — direct-fit replacements
The widest selection of BMW 540i emission control sensors here comes from DENSO, Walker Products, Bosch and NTK Oxygen Sensors. Other categories BMW 540i owners shop for: BMW 540i Brake Pads and Shoes, BMW 540i Springs and Suspension Parts and BMW 540i Exterior Lights, or browse all BMW 540i parts and accessories.