BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW E34 M5 S38 3.5L

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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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Universal Catalytic Converter - 2.25"
Universal Catalytic Converter - 2.25"
Emico - Corporate Logo
T#:23152011
Part#: 602205
In Stock
$ 97.99 USD
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$ 97.99 USD
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Enhance your BMW's performance with this OBD II compliant universal fit catalytic converter. This converter, devoid of O2 sensor bungs, ensures compatibility with various vehicles. However, please note that it's not a 50-state legal catalytic converter. For California residents, it's recommended to verify local laws pertaining to aftermarket catalytic converters.
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3 Pc. OXygen Sensor Wrench Set
3 Pc. OXygen Sensor Wrench Set
CTA Tools - Corporate Logo
T#:2393414
Part#: CTA2073
In Stock
$ 50.01 USD
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$ 50.01 USD
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Get the complete set.
Oxygen Sensor Thread Chaser
Oxygen Sensor Thread Chaser
CTA Tools - Corporate Logo
T#:3729697
Part#: CTA2068
In Stock
$ 11.41 USD
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$ 11.41 USD
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Remove rust and dirt for easy installation with this tool
Thin Wall Oxygen Sensor Socket
Thin Wall Oxygen Sensor Socket
CTA Tools - Corporate Logo
T#:640932
Part#: CTA2064
In Stock
$ 17.85 USD
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$ 17.85 USD
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Out of space? Use this thin wall socket.
Gasket Ring - Priced Each (42mm)
Gasket Ring - Priced Each (42mm)
HJS - Corporate Logo
T#:590224
Part#: 18111245489
In Stock
$ 4.44

This product was last offered at the strikethrough price on
05-04-2026

$ 4.42 USD
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$ 4.42 USD
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BMW Xforce Smartbox Varex Muffler ECU Upgrade Module
BMW Xforce Smartbox Varex Muffler ECU Upgrade Module
XForce - Corporate Logo
T#:28570834
Part#: VKSB01-ECU-MODUL
Ships in 1 Business Day
$ 399.00 USD
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$ 399.00 USD
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BMW Xforce Smartbox Varex Muffler ECU Upgrade Module is the ideal choice for BMW owners seeking to enhance their vehicle's performance. This innovative module seamlessly integrates with the Varex muffler system, allowing for precise control over exhaust sound and performance. With its easy installation process and versatile functionality, it provides an elevated driving experience for BMW enthusiasts.
  • Seamless integration with Varex muffler system
  • Precise control over exhaust sound and performance
  • Easy installation process
  • Versatile functionality for enhanced driving experience
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Genuine BMW Exhaust Gasket Ring - E23 E24 E28 E30 E34
Genuine BMW Exhaust Gasket Ring - E23 E24 E28 E30 E34
HJS - Corporate Logo
T#:7487
Part#: 18111723541
Ships in 1-2 days
$ 5.99

This product was last offered at the strikethrough price on
05-07-2026

$ 4.99 USD
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$ 4.99 USD
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This 45mm exhaust gasket ring seals the connection point between two exhaust pipes.
HJS Exhaust Gasket Ring - E24, E28, E32, E34
HJS Exhaust Gasket Ring - E24, E28, E32, E34
HJS - Corporate Logo
T#:19551
Part#: 18111175311
Ships in 3 Business Days
$ 7.99 USD
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$ 7.99 USD
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GASKET RING 18111175311 Manufactured by CRP

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This item fits the following BMWs:
BMW 5 Series - 525i, 525i Wagon

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Offset Oxygen Sensor Wrench- Extended
Offset Oxygen Sensor Wrench- Extended
CTA Tools - Corporate Logo
T#:640929
Part#: CTA2065
Back Ordered
$ 19.99 USD
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$ 19.99 USD
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Extra length is needed sometimes
Turner Motorsport Double Wall Slash Cut Exhaust Tips - 2.75 Inlet - 3.5 OD - Stepped Left And Stepped Right- Titanium Black Chrome
Turner Motorsport Double Wall Slash Cut Exhaust Tips - 2.75 Inlet - 3...
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:55857771
Part#: 026732TMS03KTKT2
Ships on Oct 29, 2026
New Item
$ 279.99 USD
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$ 279.99 USD
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