BMW Oxygen Sensor - O2 Sensors for BMW E90 M3 S65 4.0L

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Every new BMW, and all BMW cars made from 1980 on, have an oxygen sensor, often called an "O2 sensor". The oxygen sensor is part of your BMW's emissions control system and feeds data to BMW engine management computer. The oxygen sensor is positioned in the exhaust pipe and can detect rich and lean mixtures. The goal of the oxygen sensor is to help the engine run as efficiently as possible and also to produce as few emissions as possible. 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. We carry Bosch oxygen sensors, and in some cases Genuine BMW oxygen sensors or OEM oxygen sensors.
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OEM Bosch Oxygen Sensor -- E9X M3
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Bosch - Corporate Logo
T#:14660
Part#: 11787537984
In Stock
$ 143.99 USD
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$ 143.99 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. Bosch's Oxygen sensors are high quality and will give you the the longest and best performance for the price.

This is the pre-cat oxygen sensor. This is a OEM replacement part for BMW part # 11787558073 and .

Bosch is one of the largest OEM producers of Genuine BMW and aftermarket parts in the world, providing parts for almost every major automotive manufacturer. Bosch has likely supplied many of the original electrical (and mechanical) parts for your BMW. Thanks to their quality, high durability, and reliability, you should expect a long service life from Bosch products.

As a leading source of high performance BMW parts and accessories since 1993, we at Turner Motorsport are honored to be the go-to supplier for tens of thousands of enthusiasts the world over. With over two decades of parts, service, and racing experience under our belt, we provide only quality performance and replacement parts.  All of our performance parts are those we would (and do!) install and run on our own cars, as well as replacement parts that are Genuine BMW or from OEM manufacturers. We only offer parts we know you can trust to perform!

This item fits the following BMWs:
2008-2013 E90 E92 E93 BMW M3 Sedan, Coupe, Convertible

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Schwaben - Corporate Logo
T#:368923
Part#: FO-78
In Stock
Sale - Save 25% $ 47.99
$ 35.99 USD
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Sale - Save 25% $ 47.99
$ 35.99 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.
OEM Bosch Post-Cat Oxygen Sensor (O2 Sensor) - E9X M3
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Bosch - Corporate Logo
T#:14663
Part#: 11787539125
In Stock
Sale - Save 5% $ 102.99
$ 97.84 USD
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Sale - Save 5% $ 102.99
$ 97.84 USD
Free Shipping on orders $49 and up

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.

This is a Bosch O2 sensor - also known as a Lambda probe. Bosch is an OEM supplier to BMW.

Position: after the catalytic converter (post-cat).

This item fits the following BMWs:
2008-2013 E90 E92 E93 BMW M3 Sedan, Coupe, Convertible

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Bav Auto Tools - Corporate Logo
T#:580383
Part#: B8800067
In Stock
Sale - Save 15% $ 28.99
$ 24.64 USD
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Sale - Save 15% $ 28.99
$ 24.64 USD
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This 1/2" Drive, 7/8" x 6" Extra Long O2 sensor tool is used to remove difficult to reach oxygen sensors.

Bav Auto Tools - Corporate Logo
T#:580382
Part#: B8800066
Ships on Nov 13, 2025
$ 48.99 USD
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Slotted, pivoting head has both hexagon and double hexagon drive. Angled handle reaches around obstructions. Fits all Oxygen sensors with 7/8in (22mm) hex.
CTA Tools - Corporate Logo
T#:2393414
Part#: CTA2073
In Stock
$ 42.99 USD
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Get the complete set.

OEM Bosch Universal 4-Wire Oxygen Sensor - Priced Each
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Bosch - Corporate Logo
T#:372884
Part#: 15733
In Stock
$ 63.99 USD
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$ 63.99 USD
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Bosch Universal Oxygen Sensors are perfect for replacing faulty sensors throwing off a check engine lights and causing poor operation and low gas mileage. If you are looking for a cheaper option or are unable to get a hold of the sensor you need, you can reuse part of the original wiring harness to connect this high quality replacement.
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Genuine BMW - Corporate Logo
T#:367756
Part#: 11787537984
Ships Jul 1, 2025
Sale - Save 3% $ 328.99
$ 318.97 USD
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Sale - Save 3% $ 328.99
$ 318.97 USD
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If your vehicle has a bad oxygen sensor, chances are you will notice a trouble code and it may cause you to fail an emissions check. Replace bad oxygen sensors and eliminate those codes.

FAE - Corporate Logo
T#:583149
Part#: 11787537984
Ships Jul 22, 2025
$ 90.99 USD
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$ 90.99 USD
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Located on the catalytic converters, 2 required

Pierburg - Corporate Logo
T#:21966015
Part#: 11787537984
In Stock
$ 161.99
$ 98.99 USD
Limited Qty Sale
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$ 161.99
$ 98.99 USD
Limited Qty Sale
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If your vehicle has a bad oxygen sensor, chances are it may cause you to fail an emissions check. Replace bad oxygen sensors and eliminate those codes.
Lisle - Corporate Logo
T#:641698
Part#: LIS12390
Ships in 1 Business Day
$ 30.99 USD
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Tool comes with both 1/2" and 3/8" drive.
Genuine BMW - Corporate Logo
T#:367757
Part#: 11787539125
Ships Jul 1, 2025
Sale - Save 3% $ 263.99
$ 255.18 USD
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Sale - Save 3% $ 263.99
$ 255.18 USD
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If your vehicle has a bad oxygen sensor, chances are you will notice a trouble code and it may cause you to fail an emissions check. Replace bad oxygen sensors and eliminate those codes.


CTA Tools - Corporate Logo
T#:3729697
Part#: CTA2068
In Stock
$ 9.99 USD
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Remove rust and dirt for easy installation with this tool
Stainless Steel Weld-In Oxygen Sensor Bung - M18x1.5mm
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Turner Motorsport - Corporate Logo
T#:587345
Part#: TMS02BUNGKT
In Stock
Sale - Save 30% $ 3.99
$ 2.79 USD
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Sale - Save 30% $ 3.99
$ 2.79 USD
Free Shipping on orders $49 and up
Finish your custom exhaust with this T304 stainless steel weld-in oxygen sensor bung. PART DESIGN CNC-cut from T304 Stainless Steel for corrosion resistance Radiused to match 2.50"-3.00" OD tubing for ease of welding Threaded for M18x1.5mm RH oxygen sensors INSTALLATION AND SUPPORT These are universal parts, meaning they have no direct fitment to any particular vehicle. Custom welding and fabrication is required. Special prep/clean procedures must be adhered to for proper welding.
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CTA Tools - Corporate Logo
T#:640932
Part#: CTA2064
In Stock
$ 14.99 USD
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Out of space? Use this thin wall socket.

Hazet - Corporate Logo
T#:6181663
Part#: 4680-1
Ships in 1 Business Day
$ 96.99 USD
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Properly remove stubborn o2 sensors.

FAE - Corporate Logo
T#:583145
Part#: 11787539125
Ships Jul 22, 2025
$ 103.99 USD
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$ 103.99 USD
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Located on the catalytic converters
CTA Tools - Corporate Logo
T#:640929
Part#: CTA2065
Back Ordered
$ 16.99 USD
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Extra length is needed sometimes