HUMBL — Performance & OE Car Parts, Tools, Coilovers, Exhausts & Sensors. Enthusiast-run auto parts store shipping worldwide from the USA, every part tested on our own project cars.

top of page

BMW F80 M3 Upstream Oxygen (O2) Sensor

SKU F80-M3-O2U
Price

$164.99

The upstream oxygen sensor reads exhaust gases directly from the S55 engine's cylinders, giving the ECU the feedback it needs to keep the air-fuel ratio precisely tuned under boost.

Built to fit the BMW F80 M3's S55 twin-turbo exhaust layout, it threads into the factory upstream sensor location.

A degraded upstream sensor can hurt throttle response and fuel economy while triggering warning lights — this replacement restores accurate real-time fueling feedback.

Reference: OE/interchange ULTRA-POWER

Quantity

New

8c3272c12fe546269c6aa08bc859a28a_edited.png
Sf33f6f8e1fe9460e95817d9a8891b083d_edited.png
image_2026-01-03_181339089-removebg-preview.png
image_2026-01-03_191319636-removebg-preview.png

Happy Humbl Customers

What they’re saying

image_2026-01-03_195200424.png

"The socket set is top-tier quality. Heavy-duty steel that handles real torque without slipping. Better than the big box store brands honestly."

 Jason M., Ohio

image_2026-01-03_195254831.png
Ordered brake pads and rotors for my truck. Everything fit perfectly right out of the box. Saved me cash and shipping was surprisingly fast."
 Isaac L., Texas
image_2026-01-03_195414958.png
"Incredible service. Needed a specific sensor fast and it arrived a day early. The site is simple to use. Finally found a reliable parts source!"
Mike T., Florida
bottom of page