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.

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BMW F80 M3 Downstream Oxygen (O2) Sensor

SKU F80-M3-O2D
Price

$104.99

The downstream oxygen sensor monitors catalytic converter efficiency after exhaust gases pass through it, reporting back to the ECU for emissions monitoring.

This sensor is fitted specifically for the BMW F80 M3's S55 twin-turbo I6 exhaust system, installing at the factory downstream location.

A worn downstream sensor is a common source of false catalyst-efficiency codes — replacing it clears these codes and keeps emissions monitoring accurate.

Reference: OE/interchange ULTRA-POWER

Quantity

New

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

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"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!"
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