BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW 7 Series E66 (2002-2008)

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Performance exhaust options from the best BMW aftermarket producers and the most reliable replacement maintenance parts are all at Turner Motorsport. Over time, factory exhaust on the cleanest examples of BMW heritage shows their age. Our factory replacement exhausts are just what you need to keep your favorite car in showroom condition or finish off your restoration. If you are looking for a bump in sound and power, you can also find our performance options like Headers, Downpipes, and Mufflers from Corsa, DINAN, and others on this page.

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OEM Bosch Post-Cat Oxygen Sensor (O2 Sensor) - E9X M3
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Bosch - Corporate Logo
T#:14663
Part#: 11787539125
In Stock
$ 155.99

This product was last offered at the strikethrough price on
05-07-2026

$ 111.99 USD
Free Shipping on orders $49 and up
$ 111.99 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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HJS - Corporate Logo
T#:2423575
Part#: 1K0253141N
In Stock
18% off MSRP $ 34.20

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

$ 27.99 USD
Free Shipping on orders $49 and up
18% off MSRP
$ 34.20

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

$ 27.99 USD
Free Shipping on orders $49 and up
Commonly found between mid-pipe and front muffler. 60x95mm
Bosch Oxygen Sensor - Rear Position - E60, E63, E64, E65, E66 ...
2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!
Bosch - Corporate Logo
T#:377371
Part#: 11787539126
In Stock at Vendor
$ 109.99

This product was last offered at the strikethrough price on
05-07-2026

$ 106.00 USD
Free Shipping
$ 106.00 USD
Free Shipping
Located in the rear position of the exhaust manifold

HJS - Corporate Logo
T#:554110
Part#: 18307536425
In Stock
$ 68.58

This product was last offered at the strikethrough price on
06-08-2026

$ 43.19 USD
Free Shipping on orders $49 and up
$ 43.19 USD
Free Shipping on orders $49 and up
To connect the exhaust pipes

HJS - Corporate Logo
T#:37622243
Part#: 18307560781
In Stock at Vendor
$ 44.99

This product was last offered at the strikethrough price on
05-07-2026

$ 39.99 USD
Free Shipping on orders $49 and up
$ 39.99 USD
Free Shipping on orders $49 and up

Dual clamp pipe connector joins exhaust pipes without welding. Split, compressible design clamps tightly around joined pipes for a leak-free fit. Includes hardware.

76.2mm (3.00 inch) diameter.

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