BMW Exhaust Parts, Mufflers & Catalytic Converters

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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OE BMW Exhaust Rear Muffler 18121178047

T#:556074

Part#: 18121178047

In Stock

$ 279.24

This product was last offered at the strikethrough price on
05-03-2026

$ 248.99 USD

Limited Qty Sale

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Qty

$ 279.24

This product was last offered at the strikethrough price on
05-03-2026

$ 248.99 USD

Limited Qty Sale

Add to Wish List

OEM BMW EXHAUST REAR MUFFLER 18121178047.--

This item fits the following BMWs:
BMW 3 Series - 325e, 325es

70mm Exhaust Clamp

2X Entries Into Our F80 M3 Sweepstakes

T#:37689742

Part#: 034-105-D303

In Stock

$ 39.00 USD

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$ 39.00 USD

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034Motorsport Stainless Steel Racing Catalyst/Downpipe

2X Entries Into Our F80 M3 Sweepstakes

T#:26771743

Part#: 034-105-4051

Ships in 2 Business Days

$ 1,158.00 USD

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Qty

$ 1,158.00 USD

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The 034Motorsport Stainless Steel Racing Catalyst is purpose-built to replace the restrictive factory catalytic converter in BMW F2x/F3x B58 vehicles. With this downpipe installed, drivers can expect significant gains in horsepower and torque throughout the powerband. Additionally, turbocharger lag is reduced, throttle response is improved, and the exhaust note is enhanced for a more aggressive tone. By eliminating the primary bottleneck in the stock exhaust system, this upgrade allows owners to fully unlock the potential of their turbocharged engines.

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