BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW X5 M S63 4.4L

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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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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#:396285
Part#: 11657620508
In Stock
$ 24.99 USD
Free Shipping on orders $49 and up

BMW N54 N55 N63 S63 HJS V-Band Exhaust Clamp - Priced Each is designed for superior performance and reliability in exhaust system maintenance and upgrades. Engineered by Turner Motorsport, this high-quality clamp ensures a secure and leak-free connection in your BMW's exhaust system.

  • Durable Construction: Made from premium materials to withstand high temperatures and harsh conditions, ensuring long-lasting performance.
  • Precision Fit: Designed to fit perfectly with BMW N54, N55, N63, and S63 engines, offering a secure and reliable seal.
  • Improved Exhaust Efficiency: Prevents leaks and maintains optimal exhaust flow, contributing to better engine performance and efficiency.
  • Easy Installation: The V-band design allows for quick and easy installation or removal, simplifying exhaust system maintenance.
  • Versatile Use: Ideal for both performance upgrades and routine repairs, making it a valuable addition to any BMW enthusiast's toolkit.
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Bosch - Corporate Logo
T#:372884
Part#: 15733
In Stock
$ 74.99 USD
Free Shipping
$ 74.99 USD
Free Shipping
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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Pierburg - Corporate Logo
T#:362205
Part#: 11747810831
In Stock
$ 85.99

This product was last offered at the strikethrough price on
03-23-2026

$ 43.99 USD
Free Shipping on orders $49 and up
$ 43.99 USD
Free Shipping on orders $49 and up

This electric valve serves one of several purposes depending on which car it is used on. Please read the application listings below to ensure you are purchasing the correct part. 

Pierburg pumps are some of the most trusted and widely used on the market. From fuel, water, air and vacuum Pierburg has you covered with OE quality and reliable performance year after year.


This item fits the following BMWs:
Secondary Air System Valve
1996-1998 E36 BMW 323is 323ic 328i 328is 328ic M3
1999-3/2003 E46 BMW 323i 323ci 325i 325ci 325xi 328i 328ci 330i 330ci 330xi
2003-2005 E46 BMW 325i 325ci (M56)
1997-2003 E39 BMW 525i 528i 530i 
2000-2006 E53 BMW X5 3.0i 
1997-2002 Z3 BMW Z3 2.3 Z3 2.5i Z3 2.8 Z3 3.0i 
1997-2000 Z3 BMW M Roadster M Coupe (S52)

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HJS - Corporate Logo
T#:2423575
Part#: 1K0253141N
Ships in 1-2 days
47% 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.

$ 17.99 USD
Free Shipping on orders $49 and up
47% 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.

$ 17.99 USD
Free Shipping on orders $49 and up
Commonly found between mid-pipe and front muffler. 60x95mm
HJS - Corporate Logo
T#:37622243
Part#: 18307560781
Ships in 2 Business Days
$ 47.99 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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FAE - Corporate Logo
T#:583145
Part#: 11787539125
Ships on Oct 13, 2026
$ 109.99 USD
Free Shipping
$ 109.99 USD
Free Shipping
Located on the catalytic converters