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BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW 1 Series

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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Downpipe Installation Kit - N54 3.0L

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T#:587400

Part#: N54DPINSTALLKT

In Stock

$ 158.99 USD

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$ 158.99 USD

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This kit includes everything you need to install 2 new downpipes. All parts included are genuine BMW or high-quality aftermarket, and every necessary component is accounted for. See kit contents tab for a list of included components

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Rear Oxygen Sensor Set - N52, N54

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T#:55353594

Part#: 11787545074/5KT2

In Stock

$ 366.99 USD

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$ 366.99 USD

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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.

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

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T#:55857772

Part#: 11787589475KT2

In Stock

$ 335.99 USD

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$ 335.99 USD

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

Victor Reinz Exhaust Downpipe Gasket

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T#:363233

Part#: 18107549447

Ships in 8 Business Days

$ 17.99 USD

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$ 17.99 USD

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Exhaust gasket for the exhaust manifold downpipe

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

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T#:55317713

Part#: BFR1/2O2SKT2

In Stock

$ 400.99

This product was last offered at the strikethrough price on
07-13-2026

$ 327.99 USD

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$ 327.99 USD

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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