Find Parts That Fit Your Vehicle

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.

Sort By:

LAMBDA MONITOR SENSOR

Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:619537

Part#: 11788689863

Ships in 1 day

13% off MSRP $ 325.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 281.99 USD

Add to Wish List

Qty

13% off MSRP

$ 325.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 281.99 USD

Add to Wish List

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

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:55857772

Part#: 11787589475KT2

In Stock

$ 342.99 USD

Add to Wish List

Qty

$ 342.99 USD

Add to Wish List

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

Rear Oxygen Sensor Set - N52, N54

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:55353594

Part#: 11787545074/5KT2

In Stock

$ 366.99 USD

Add to Wish List

Qty

$ 366.99 USD

Add to Wish List

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.

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

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:55317713

Part#: BFR1/2O2SKT2

In Stock

$ 400.99

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

$ 335.99 USD

Add to Wish List

Qty

$ 335.99 USD

Add to Wish List

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

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:56110313

Part#: 11787558055KT

In Stock

$ 307.99

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

$ 304.99 USD

Add to Wish List

Qty

$ 304.99 USD

Add to Wish List

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.

Show More Show Less

Genuine BMW Oxygen Sensor - Rear Manifold

Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:367754

Part#: 11787523435

Ships in 1 day

6% off MSRP $ 524.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 493.99 USD

Add to Wish List

Qty

6% off MSRP

$ 524.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 493.99 USD

Add to Wish List

O2 Sensor Bung and Plug

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:339000

Part#: TEN9949O2S

Ships in 6 Business Days

Starting at $ 12.95 USD

Add to Wish List

Starting at $ 12.95 USD

Add to Wish List

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.

Project Cars

SELECT YOUR BMW

Oxygen Sensors

LAMBDA MONITOR SENSOR

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

Rear Oxygen Sensor Set - N52, N54

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

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

Genuine BMW Oxygen Sensor - Rear Manifold

O2 Sensor Bung and Plug

Select Vehicle

Category

Brand

Price

Special Offers

Shipping

Narrow Results