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Oxygen Sensors

Oxygen sensors constantly monitor engine emissions and relays this data to the DME. Using these readings the computer determines the proper air/fuel mixture as well as how efficiently the catalyst system is functioning. Symptoms of a failed oxygen sensor range from an EML to poor fuel economy and severe loss of power. A failed upstream sensor will typically cause the engine to run poorly and a failed downstream sensor will typically present as a catalyst efficiency code.

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Schwaben 7/8"(22mm) Flexible Oxygen Sensor Wrench

T#:368923

Part#: FO-78

In Stock

Sale - Save 25% $ 48.99

This product was last offered at the strikethrough price on
05-02-2026

$ 36.74 USD

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Sale - Save 25%

$ 48.99

This product was last offered at the strikethrough price on
05-02-2026

$ 36.74 USD

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The Schwaben oxygen sensor wrench has a six-point pivot head to provide a secure grip on stubbornly tight oxygen sensors located in awkward, inaccessible locations.

Vitesco Oxygen Sensor/Lambda Probe - 415mm - F3X 328d, E70 35d, F15 x...

T#:33446263

Part#: 13628589844

In Stock

Sale - Save 5% $ 442.99

This product was last offered at the strikethrough price on
07-14-2026

$ 420.84 USD

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Sale - Save 5%

$ 442.99

This product was last offered at the strikethrough price on
07-14-2026

$ 420.84 USD

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Oxygen sensors measure exhaust oxygen. Their signals are used by the vehicle computer to adjust the air/fuel ratio and test vehicle emissions. Degraded oxygen sensors reduce engine performance and fuel efficiency, and increase harmful tailpipe emissions. They can also turn on the Check Engine Light and cause a car to fail an emissions test.

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Rear Oxygen Sensor Set - N52, N54

T#:55353594

Part#: 11787545074/5KT2

In Stock

$ 366.99 USD

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$ 366.99 USD

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Sluggish oxygen sensors do a lot more than just light up your dashboard with an annoying Check Engine Light—they directly choke your BMW’s performance.

Bosch Oxygen Sensor Set - Pre and Post Catalytic Converter - N55 ...

T#:55857772

Part#: 11787589475KT2

In Stock

$ 335.99 USD

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$ 335.99 USD

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Extreme exhaust heat and carbon buildup degrade your factory oxygen sensors over time, sending lazy data to your DME and robbing you of performance.

Front Oxygen Sensor Set - E9x, E82, E88, Z4

T#:55317713

Part#: BFR1/2O2SKT2

In Stock

$ 400.99

This product was last offered at the strikethrough price on
07-14-2026

$ 333.99 USD

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$ 333.99 USD

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Over time, that degradation robs your BMW of its crisp throttle response, tanks your fuel economy, and leaves you staring at a failed emissions ticket

Bosch Oxygen Sensors - Bank 1 And 2 Pre-Cat - N52

T#:56110313

Part#: 11787558055KT

In Stock

$ 307.99

This product was last offered at the strikethrough price on
08-12-2026

$ 304.99 USD

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$ 304.99 USD

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Your engine's air fuel ratio needs to be dead on. Worn out factory pre-cat oxygen sensors delay vital data to the DME, leading to sub optimal fueling, lost horsepower, and dangerous hesitation under load.

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Vitesco Oxygen Sensor/Lambda Probe - 915mm - BMW E90 335d, E70 35d, F...

T#:33446261

Part#: 13628589846

Ships in 1-2 days

$ 546.98 USD

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$ 546.98 USD

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Oxygen sensors are used to adjust the air/fuel ratio and test vehicle emissions. Degraded oxygen sensors reduce engine performance and fuel efficiency, and increase tailpipe emissions. They can cause a car to fail an emissions test. Restore your emissions system with a new NOx Sensor from Vitesco.

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Vitesco Oxygen Sensor Kit - F30/31 N47, E70 M57

T#:33446269

Part#: 13628589844KT

Ships in 1-2 days

$ 989.99 USD

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$ 989.99 USD

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Includes both rear NOx Sensors for your BMW. A Vitesco Technologies Kit.

O2 Sensor Bung and Plug

T#:339000

Part#: TEN9949O2S

Ships in 6 Business Days

Starting at $ 12.95 USD

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Starting at $ 12.95 USD

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This weld-in bung allows an O2 sensor to be screwed into your exhaust system. It's required for custom exhaust systems, and is also useful for air/fuel ratio measurements when dyno testing.

Nitrogen Oxide Sensor (NOx Sensor) - Rear - E90 335d, F25 28dX ...

T#:33446273

Part#: 13628589845

Back Ordered

$ 394.99 USD

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$ 394.99 USD

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A degraded NOx Sensor can cause your vehicle to have a check engine light and poor performance. Restore your emissions system with a new NOx Sensor from Vitesco!

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