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 E46 330i Downstream Oxygen (O2) Sensor

SKU E46-330I-O2D
Price

$50.99

The downstream oxygen sensor monitors catalytic converter efficiency after exhaust gas passes through it. A failing sensor typically triggers a check-engine light even with normal driving behavior.

Designed for the E46 330i's 3.0L I6 M54 exhaust layout, this sensor matches the factory bung location and wiring connector for bolt-in fitment.

Reliable construction ensures accurate catalyst monitoring, helping the car pass emissions checks and keeping the dash clear.

Reference: OE/interchange SK25024392

Quantity

New

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What they’re saying

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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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