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BMW Exhaust Parts, Mufflers & Catalytic Converters for BMW G42 M240i xDrive B58 3.0L

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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"

T#:23152011

Part#: 602205

Ships in 3 Business Days

$ 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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Bav Auto Oxygen Sensor Tool - Angled Handle - 7/8"

10X Entries Into Our F80 M3 Sweepstakes

T#:580382

Part#: B8800066

Ships in 1 Business Day

Sale - Save 25% $ 49.99

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

$ 37.49 USD

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Sale - Save 25%

$ 49.99

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

$ 37.49 USD

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Slotted, pivoting head has both hexagon and double hexagon drive. Angled handle reaches around obstructions. Fits all Oxygen sensors with 7/8in (22mm) hex.

3 Pc. OXygen Sensor Wrench Set

T#:2393414

Part#: CTA2073

In Stock

$ 50.01 USD

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$ 50.01 USD

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Get the complete set.

Bav Auto Extra Long Oxygen Sensor Tool - 1/2" Drive, 7/8" x 6" ...

10X Entries Into Our F80 M3 Sweepstakes

T#:580383

Part#: B8800067

Ships in 1 Business Day

Sale - Save 20% $ 29.99

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

$ 23.99 USD

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Sale - Save 20%

$ 29.99

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

$ 23.99 USD

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This 1/2" Drive, 7/8" x 6" Extra Long O2 sensor tool is used to remove difficult to reach oxygen sensors.

Akrapovič Sound Kit for BMW G42 Exhaust

T#:37993401

Part#: P-HF1452

In Stock at Vendor

$ 610.99 USD

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$ 610.99 USD

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Akrapovič Sound Kit for BMW G42 Exhaust

The Akrapovič Sound Kit for BMW G42 Exhaust revolutionizes the driving experience by offering complete control over your exhaust sound. Designed specifically for select Akrapovič exhaust systems, this cutting-edge kit allows drivers to switch between a refined quiet mode and an exhilarating sporty sound with ease. Integrated with Akrapovič's advanced technology, the kit includes a receiver to operate the actuators that manage the exhaust valves. Control is at your fingertips with the Sound Remote Controller or the Akrapovič smartphone app, available for both iOS and Android.

Key Benefits:

Customizable exhaust sound to match your driving preferences
Seamless switching between quiet and sporty modes
Compatible with select Akrapovič exhaust systems for BMW G42
Integrated receiver for easy evolution system compatibility
Control via Sound Remote Controller or Akrapovič app
Elevates the sporty appeal of your BMW G42

Transform your BMW G42 with the Akrapovič Sound Kit and experience a driving experience that is as unique as you are.

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Akrapovic Titanium Slip-On Line Exhaust - 2021+ BMW M240I

T#:18037013

Part#: S-BM/T/32H

In Stock at Vendor

$ 7,036.99 USD

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$ 7,036.99 USD

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FITMENT NOTE: An extra stock valve actuator (BMW # 18308686640) is needed when installing the Slip-On exhaust system on BMW M240i (G42). Offering noticeable weight savings, increased power and torque, and a dramatic soundtrack, this system is constructed from lightweight high-grade titanium and completed with hand-crafted carbon-fiber tailpipes. Power and torque are increased by 7.1 Kw (9.7 hp) at 2,450 rpm and 20.5 Nm at 2,450 rpm when tested on the Akrapovič dyno against a BMW M240i with a standard stock exhaust. An exhilarating soundtrack is delivered through the use of special parts fitted into the system. Two valves – instead of one, as in the stock configuration – are calibrated to tailor the sound, and two acoustic reflectors are fitted on the tailpipes to guide the sound into the car’s cabin and change the driving experience, producing a fully immersive sound in the car’s cockpit, to supply thrills and enjoyment that can be enjoyed by all occupants. Because the Akrapovič Slip-On Line (Titanium) exhaust system has two valves, one more than the stock configuration, a TNG controller is included in the product to activate the additional exhaust valve. Two resonators, one on each side of the central muffler, perfect the sound experience.

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Oxygen Sensor Thread Chaser

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

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.

Bav Auto Exhaust Doughnut Stretcher

10X Entries Into Our F80 M3 Sweepstakes

T#:580373

Part#: B8800051

In Stock

Sale - Save 25% $ 20.99

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

$ 15.74 USD

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Qty

Sale - Save 25%

$ 20.99

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

$ 15.74 USD

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This tool is not vehicle specific and is a universal tool that may or may not work on all applications. This exhaust doughnut stretcher features an offset J-hook to grab onto the rubber rings used to mount most BMW exhaust systems. Features a large coated handle for a comfortable grip.

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Offset Oxygen Sensor Wrench- Extended

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

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