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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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Oxygen Sensor - Downstream Catalytic Converter

T#:27105147

Part#: 11787589475

In Stock

Sale - Save 20% $ 127.99

This product was last offered at the strikethrough price on
05-03-2026

$ 101.99 USD

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Sale - Save 20%

$ 127.99

This product was last offered at the strikethrough price on
05-03-2026

$ 101.99 USD

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Oxygen Sensor

T#:27105145

Part#: 11787545075

In Stock

Sale - Save 21% $ 113.99

This product was last offered at the strikethrough price on
05-03-2026

$ 90.57 USD

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Sale - Save 21%

$ 113.99

This product was last offered at the strikethrough price on
05-03-2026

$ 90.57 USD

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Oxygen Sensor

T#:27105146

Part#: 11787589121

In Stock

Sale - Save 16% $ 118.99

This product was last offered at the strikethrough price on
05-03-2026

$ 100.00 USD

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Sale - Save 16%

$ 118.99

This product was last offered at the strikethrough price on
05-03-2026

$ 100.00 USD

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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
08-13-2026

$ 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.

Oxygen Sensor Kit - F30/31 N47, E70 M57

T#:55569520

Part#: 13628589844KT2

Ships on Oct 15, 2026

Sale - Save 10% $ 770.99

This product was last offered at the strikethrough price on
07-03-2026

$ 693.88 USD

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$ 770.99

This product was last offered at the strikethrough price on
07-03-2026

$ 693.88 USD

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Oxygen sensors are used by the vehicle computer to adjust the air/fuel ratio and test vehicle emissions. This kit includes both rear Sensors.

Febi Rear Oxygen Sensor - Bank 1 Post-Cat

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T#:16375111

Part#: 11787526262

Special Order: No Guaranteed ETA

$ 124.99 USD

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$ 124.99 USD

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The oxygen sensor is vital to the performance and drivability of your car. The engine computer relies on data from the sensor to make adjustments in engine efficiency and performance. When your BMW oxygen sensor fails, the computer can no longer sense the air/fuel ratio, so it ends up guessing -- resulting in poor performance, poor gas mileage, and increased pollution. Make sure your BMW engine performs as it should, and doesn't use more fuel than it needs to, by simply changing your oxygen sensor today. There is no lifespan on O2 sensors but there are several fault codes that indicate a failed sensor (O2 monitoring, cat efficiency, O2 heating circuit, O2 readiness, and others). The O2 sensor is heated and has a self-calibration feature so once you get the codes or feel performance has suffered, a new sensor is a good starting point to get you back to peak performance. Febi's Oxygen sensors are high quality and will give you the longest and best performance for the price.

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Upstream NOx Sensor

T#:56254774

Part#: 13628589846

Special Order: No Guaranteed ETA

$ 312.99 USD

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$ 312.99 USD

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Maintain peak performance and emissions compliance on your BMW with this replacement upstream NOx sensor by Febi Bilstein.

Oxygen Sensor

T#:56254780

Part#: 11787836451

Special Order: No Guaranteed ETA

$ 63.99 USD

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$ 63.99 USD

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This Febi Bilstein oxygen sensor is designed as a direct OEM-spec replacement to keep your engine management system operating with pin-point accuracy.

Oxygen Sensor

T#:56254844

Part#: 11787512973

Special Order: No Guaranteed ETA

$ 62.99 USD

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$ 62.99 USD

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Maintain peak engine performance and precise air/fuel ratio telemetry with the Febi Bilstein Heated Oxygen Sensor.

Oxygen Sensor

T#:56254778

Part#: 11781743994

Special Order: No Guaranteed ETA

$ 62.99 USD

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$ 62.99 USD

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This Febi Bilstein Oxygen Sensor provides a high-quality OEM replacement option built to precise vehicle specifications.

Front Oxygen Sensor - Bank 1 Pre-Cat

T#:54780515

Part#: 11787558055

Ships on Oct 19, 2026

$ 99.99 USD

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$ 99.99 USD

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02 SENSOR BUNG (WELD-ON TYPE) 304 STAINLESS STEEL (M18x1.5mm) ...

T#:47439371

Part#: 02SB1815

Ships on Mar 15, 2027

Sale - Save 39% $ 3.99

This product was last offered at the strikethrough price on
05-03-2026

$ 2.44 USD

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Sale - Save 39%

$ 3.99

This product was last offered at the strikethrough price on
05-03-2026

$ 2.44 USD

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Easily add an oxygen sensor to your custom exhaust setup with this universal O2 sensor bung. Designed for simple weld-on installation, it allows you to place your sensor exactly where you need it—perfect for custom builds, exhaust modifications, or performance tuning projects.

Features:

CNC-cut from T304 Stainless Steel for corrosion resistance
Threaded for M18x1.5mm RH oxygen sensors

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NOx Sensor - SCR-Type Catalytic Converter

T#:56616356

Part#: 13627812528

Special Order: No Guaranteed ETA

$ 268.99 USD

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$ 268.99 USD

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Keep your BMW’s emissions control working with the precise calibration it demands with this Febi Bilstein NOx Sensor.

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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