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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 - N14 / N18 1.6L Engine Priced Each 77433

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T#:23383309

Part#: 11787548961

In Stock

$ 74.99 USD

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Experience a precise fuel-air mixture monitoring system with this Oxygen Sensor designed for your BMW. This heated sensor, ideal for the post-cat, ensures accurate data transmission to the ECU for optimal engine performance. If you're experiencing a drastic drop in gas mileage, replacing your O2 sensor might be the solution to your Check Engine light woes.

Benefits:

Monitors fuel-air mixture for optimum engine performance
Heated sensor type for post-cat efficiency
Helps maintain gas mileage
Essential component for resolving Check Engine light issues

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FAE Rear Oxygen Sensor - Bank 1 Post-Cat - E70, E82, E88, E90, E91, E...

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T#:1196086

Part#: 11787545074

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$ 90.99 USD

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$ 90.99 USD

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Fuel control and emissions control sensor

FAE Oxygen Sensor - E90, E92, E93

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T#:583149

Part#: 11787537984

Ships on Nov 23, 2026

$ 121.99 USD

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$ 121.99 USD

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Located on the catalytic converters, 2 required

FAE Rear Oxygen Sensor - Bank 2 Post-Cat - E70, E82, E88, E90, E91, E...

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T#:1196087

Part#: 11787545075

Ships in 7 Business Days

$ 100.99 USD

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$ 100.99 USD

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Fuel control and emissions control sensor

Oxygen Sensor R55 R56 R57 R58 R59- Priced Each

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T#:26238379

Part#: 11787549860

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$ 104.99 USD

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$ 104.99 USD

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Ensure optimal engine performance with the FAE Oxygen Sensor for your MINI. Designed to read the fuel-air mixture, this heated sensor communicates with the ECU to maintain peak performance levels. Detect issues early and prevent a drop in gas mileage with this pre-cat oxygen sensor.

Monitors fuel-air mixture for optimal engine performance
Heated sensor type ensures accurate readings
Early detection of sensor issues prevents a decrease in gas mileage
Also known as a Lambda Probe
FAE brand product guarantees quality and reliability

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FAE Front Oxygen Sensor - Bank 1 Pre-Cat - E60, E61, E82, E88, E90, E...

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T#:583150

Part#: 11787558055

Ships on Nov 18, 2026

$ 117.99 USD

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$ 117.99 USD

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Fuel control and emissions control sensor

Oxygen Sensor - Priced Each

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T#:31622538

Part#: 11787590713

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$ 101.99 USD

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$ 101.99 USD

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Rear Oxygen Sensor Set - N52, N54

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T#:55353594

Part#: 11787545074/5KT2

In Stock

Sale - Save 3% $ 366.99

This product was last offered at the strikethrough price on
10-28-2026

$ 355.63 USD

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Sale - Save 3%

$ 366.99

This product was last offered at the strikethrough price on
10-28-2026

$ 355.63 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 ...

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T#:55857772

Part#: 11787589475KT2

In Stock

$ 342.99 USD

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$ 342.99 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

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T#:55317713

Part#: BFR1/2O2SKT2

In Stock

Sale - Save 19% $ 400.99

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

$ 325.67 USD

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Sale - Save 19%

$ 400.99

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

$ 325.67 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

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T#:56110313

Part#: 11787558055KT

In Stock

Sale - Save 6% $ 307.99

This product was last offered at the strikethrough price on
08-13-2026

$ 289.50 USD

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Sale - Save 6%

$ 307.99

This product was last offered at the strikethrough price on
08-13-2026

$ 289.50 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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Oxygen sensor 77396

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T#:31556134

Part#: 11780872674

Ships in 8 Business Days

$ 77.99 USD

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$ 77.99 USD

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O2 Sensor Bung and Plug

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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.

FAE Oxygen Sensor - E60, E63, E64

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T#:583146

Part#: 11787836451

Ships on Nov 23, 2026

$ 86.99 USD

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$ 86.99 USD

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Bank 2 sensor, after the catalytic converter

FAE Oxygen sensor - E38, E39

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T#:583147

Part#: 11781742051

Ships on Nov 23, 2026

$ 86.99 USD

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$ 86.99 USD

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Rear, after catalyst

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