BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW X Series E70 (2007-2013)

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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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Meyle - Corporate Logo
T#:4934915
Part#: 3148030031
Ships on Nov 30, 2026
$ 112.99 USD
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$ 112.99 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. This oxygen sensor for BMW's with the N52, N54, and N55 3.0L engines. This 490mm bank 2 oxygen sensor is mounted after the catalytic converter.
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Active Autowerke A-Flow Catted Downpipes - S63/N63
For Model Years 2010-2012 Only
For Model Years 2010-2012 Only
Active Autowerke - Corporate Logo
T#:51110141
Part#: 11-041AF
Ships in 4 Business Days
New Item
$ 2,279.00 USD
Free Shipping
$ 2,279.00 USD
Free Shipping
For the BMW enthusiast seeking an aggressive upgrade for their 2010–2012 X5M or X6M without the drawbacks of "stinky" exhaust or frequent error codes, Active Autowerke offers the Aflow Catted Downpipes. These units provide the performance benefits typically associated with track-only pipes while maintaining high-flow catalytic efficiency. This design prevents the raw fuel odor and excessive cabin drone often found in catless setups, making them the ideal choice for a performance-oriented daily driver. Each set is custom-made in Miami, ensuring an exact, surgical fit to the factory mounting points. By utilizing high-quality casted V-band flanges and premium materials, these downpipes offer a reliable, leak-free solution that enhances the sophisticated V8 exhaust note without triggering the Check Engine Light (CEL). Key Features: No CEL Guarantee: Advanced Aflow catalyst design avoids catalytic efficiency warnings on the dashboard. Refined Exhaust Note: Enhances the natural V8 growl while maintaining high-end luxury refinement. Cast V-Band Connections: Precision upper flanges ensure a perfect, factory-like seal to the turbo housing. Direct Bolt-On: Replaces bulky OEM ceramic converters with no cutting or welding required. Thermal Management: Efficiently handles the high heat output of the BMW twin-turbo V8 platform. U.S. Manufacturing: Fabricated in-house to meet Active Autowerke’s high standards of quality control. Specifications: Primary Material: TIG-Welded 304 Stainless Steel. Manufacturing Location: Miami, FL, USA. Inlet Type: Casted Stainless Steel Flange. Weight Reduction: Significantly lighter than the heavy factory ceramic catalytic assemblies. Finish: Industrial brushed stainless. Build Time: Custom made-to-order (Approx. 2 weeks).
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