BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW E46 M3 S54 (1999-2005)

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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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Genuine BMW Exhaust Gasket - S54
Genuine BMW Exhaust Gasket - S54
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T#:360763
Part#: 18307830674
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4% off MSRP $ 27.99

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$ 26.99 USD
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$ 27.99

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$ 26.99 USD
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Cylinder Head To Exhaust Manifold Stud & Nut Kit - E46 M3
Cylinder Head To Exhaust Manifold Stud & Nut Kit - E46 M3
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T#:636980
Part#: 07129900298KT
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$ 103.99

This product was last offered at the strikethrough price on
03-04-2026

$ 96.99 USD
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$ 96.99 USD
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This convenient kit includes all the hardware you need to replace your old, rusted (or broken) exhaust manifold studs on your S54 engine's head.
Genuine BMW Protective Cover - 11627831352 - E46 M3,E85
Genuine BMW Protective Cover - 11627831352 - E46 M3,E85
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T#:36856
Part#: 11627831352
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1% off MSRP $ 67.99

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$ 66.99 USD
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1% off MSRP
$ 67.99

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Genuine BMW Protective Cover
This item fits the following BMW Chassis:
E46 M3,E85 Z4M,E46,E85 Z4,E86 Z4

Fits BMW Engines including:
S54

Universal Exhaust Pipe Reducer - 3" ID To 60mm OD
Universal Exhaust Pipe Reducer - 3" ID To 60mm OD
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Turner Motorsport - Corporate Logo
T#:587350
Part#: TMS3060ER1KT
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Sale - Save 25% $ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
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$ 39.99

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Connect your differently sized exhaust pipes quick and easy with this T304 stainless steel exhaust pipe reducer. PART DESIGN Made from T304 Stainless Steel for corrosion resistance and features a raw finish 3.0" ID (Slip) To 60mm OD (Butt) connections 1.5mm (.060") wall thickness tubing for durability Length on 60mm OD side - 2.25" Length on 3.0" ID side - 3.50"
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Universal Stainless Steel J-Pipe - 3.0" OD
Universal Stainless Steel J-Pipe - 3.0" OD
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Turner Motorsport - Corporate Logo
T#:587363
Part#: TMS30JPKT
Ships on Feb 9, 2027
Sale - Save 5% $ 53.99

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

$ 51.29 USD
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$ 53.99

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05-03-2026

$ 51.29 USD
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Rust can turn your exhaust system into useless scrap metal in a short period of time if you don't start with the right materials. Ensure your custom exhaust lasts as long as possible with this T304 stainless steel universal exhaust pipe! PART DESIGN Made from T304 Stainless Steel for corrosion resistance and features an attractive brushed finish 3.0" outside diameter (OD) 1.5mm (.060") wall thickness tubing for durability U-Bend Centerline Radius - 5.0" @ 180° angle Leg Length "A" - 5.0" Leg Length "B" - 9.50" Leg Length "C" - 10.5"
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Universal Stainless Steel Straight Pipe - 3.0" OD - 24" Length
Universal Stainless Steel Straight Pipe - 3.0" OD - 24" Length ...
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Turner Motorsport - Corporate Logo
T#:587359
Part#: TMS30SPKT
Ships on Feb 9, 2027
Sale - Save 25% $ 47.99

This product was last offered at the strikethrough price on
06-14-2026

$ 35.99 USD
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$ 47.99

This product was last offered at the strikethrough price on
06-14-2026

$ 35.99 USD
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Rust can turn your exhaust system into useless scrap metal in a short period of time if you don't start with the right materials. Ensure your custom exhaust lasts as long as possible with this T304 stainless steel universal exhaust pipe! PART DESIGN Made from T304 Stainless Steel for corrosion resistance and features an attractive brushed finish 3.0" outside diameter (OD) 1.5mm (.060") wall thickness tubing for durability Overall Length (OAL) is approximately 24.00"
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Section 1 Rasp Terminator With Crossover - E46 M3
Section 1 Rasp Terminator With Crossover - E46 M3
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Bimmerworld - Corporate Logo
T#:599413
Part#: 1004539
Ships on Aug 7, 2026
$ 590.00 USD
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$ 590.00 USD
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Rasp Terminator for the E46 M3 (also for MZ3 and Z4M) is a tuned front section that: Greatly reduce rasp from the S54 engine Balance exhaust pressure for each bank with H-pipe crossover The S54 rasp is excessive and tuning it out requires the right combination of resonators, placement, and tubing size. CPI designed their own section 1 after other designs on the market fell short. Rasp is reduced by approximately 80% on a M3 equipped with aftermarket headers. The latest RTX incorporates an H-pipe crossover that equalizes exhaust pressures in both banks before they merge for section 2. This reduces turbulence and improves exhaust flow. While not designed to gain power and torque, dyno testing showed slight gains with this system. Fitment has also been improved for better ground clearance. Tubing is a full 2.36" (60mm) and 304 stainless steel throughout. It will bolt on to most headers and to any section 2 that uses the factory-style flanges.
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Downpipe To Cat-Back Reducer - Priced Each
Downpipe To Cat-Back Reducer - Priced Each
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T#:22427013
Part#: 006555ECS06B
In Stock
Sale - Save 25% $ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
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$ 39.99

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Upgrade your exhaust system with the Downpipe To Cat-Back Reducer.

Engineered for optimal performance and durability, this reducer allows for seamless connection between your downpipe and cat-back exhaust system. Its high-quality construction ensures a tight seal, reducing exhaust leaks and enhancing overall exhaust flow. With easy installation and compatibility with various exhaust systems, this reducer is a must-have for any performance enthusiast.

  • Allows for seamless connection between downpipe and cat-back exhaust
  • High-quality construction for durability
  • Tight seal reduces exhaust leaks
  • Enhances overall exhaust flow
  • Easy installation and compatibility with various exhaust systems
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Genuine BMW Self Tapping Screw
Genuine BMW Self Tapping Screw
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Genuine BMW - Corporate Logo
T#:6383
Part#: 07119902368
In Stock
Sale - Save 21% $ 36.99

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

$ 29.27 USD
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$ 36.99

This product was last offered at the strikethrough price on
05-02-2026

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Genuine BMW Sheet Metal Screw.
Genuine BMW Secondary Air Pump Mount
Genuine BMW Secondary Air Pump Mount
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Genuine BMW - Corporate Logo
T#:360712
Part#: 11727559515
In Stock
7% off MSRP $ 28.99

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

$ 26.99 USD
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7% off MSRP
$ 28.99

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

$ 26.99 USD
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Universal Exhaust Pipe Reducer - 3" ID To 65mm OD
Universal Exhaust Pipe Reducer - 3" ID To 65mm OD
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Turner Motorsport - Corporate Logo
T#:587349
Part#: TMS3065ERKT
In Stock
Sale - Save 25% $ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
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Sale - Save 25%
$ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
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Connect your differently sized exhaust pipes quick and easy with this T304 stainless steel exhaust pipe reducer. PART DESIGN Made from T304 Stainless Steel for corrosion resistance and features a raw finish 3.0" ID (Slip fit) X 65mm OD (Butt) connections 1.5mm (.060") wall thickness tubing for durability Length on 65mm OD side - 2.25" Length on 3.0" ID side - 3.50"
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Genuine BMW Front Manifold Oxygen Sensor - Rear Position/Post-Cat - S54 3.2L
Genuine BMW Front Manifold Oxygen Sensor - Rear Position/Post-Cat - S...
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Genuine BMW - Corporate Logo
T#:367735
Part#: 11781406621
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6% off MSRP $ 423.99

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

$ 398.99 USD
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6% off MSRP
$ 423.99

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

$ 398.99 USD
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