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BMW Exhaust Parts Mufflers & Catalytic Converters

Exhaust

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.

Akrapovic Performance Exhaust Systems

The Akrapovic (pronounced "Ack-rap'-o-vich") company was founded in 1990, based on the experience gained in the field of motorcycle tuning by Igor Akrapovic. Akrapovic is now the leading supplier of Titanium exhaust systems for cars and motorcycles, and are known internationally for their quality and performance. Akrapovic supplies exhausts to BMW Motorsport for racing applications such as the M3 GT4, BMW Motorrad, and many professional race organizations campaigning BMWs and Porsches. The titanium Akrapovic uses for their exhaust systems is produced exclusively for them. Their Titanium is three times stronger and more heat resistant than any other titanium product on the market, in addition to being 40% lighter than stainless steel. This high strength allows the use of thinner insulation while still achieving the highest quality standards, bringing decisive advantages both on and off the race track. The Akrapovic exhaust systems are the lightest and highest quality exhausts you can buy for a BMW. And as you'll find from their sound clips, they also have an amazing sound quality.

Borla Performance Exhaust Systems

We've been big fans of Borla Exhaust for BMWs since we opened our doors in 1993. Borla produces some of the best-sounding, lightest, longest lasting exhausts on the market. These systems are made in the USA with true T-304 stainless steel inside and out and backed with a 1,000,000 mile warranty. Borla puts and emphasis on quality by using stainless steel throughout their piping and muffler bodies (not a mild steel or coated aluminum). This ensures the muffler does not deteriorate from the inside out. Borla designs their exhausts to complement a BMW's understated sportiness, not overpower it. Borla produces each system to have a deep, sporty tone that doesn't offend or intrude on the cabin. So you hear the exhaust when you want to, not all the time. Most Borla BMW exhausts are a true-cat back and bolt or clamp to the original catalytic converter for an easy install. Each system is engineered for the application and refined in their own sound lab - changing pipe sizing, layout, and incorporating mufflers and/or resonators as needed to achieve a sporty yet refined sound. Borla also produces full race exhausts for the committed enthusiast with cat-delete and test pipes.

Catalytic Converters

Our Catalytic Converters are the same quality construction as OEM but at a third of the cost! These are a direct replacement for the original BMW catalytic converter. These bolt on to your stock exhaust manifold and muffler, no welding required. We offer cats for both pre-OBDII BMW's (pre 1996) and BMW's with OBDII (1996+). We offer both 50 state legal converters and less expensive 49 state versions. Meets all EPA and CARB requirements. A factory warranty is included: 5 year/25,000 for 49 State versions, and 5 years/50,000 miles on 50 State legal versions.

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Corsa Performance Exhaust Systems

CORSA is one of the largest automotive and high-end marine exhaust tuning companies in the USA with engineering and manufacturing facilities in Ohio and a patented, proprietary technology called Reflective Sound Cancellation™ (RSC, for short). CORSA consults to General Motors, Ford and Daimler-Chrysler and carries the title of "official licensed product" on its GM aftermarket exhaust systems.

The result of the CORSA's partnership and extensive research and development on the BMW 3 and 5 Series, is the new dronefree RSC™ exhaust system, delivering a pleasant sound at idle and cruise, and a muscular roar at high rpm. CORSA tuned this system specifically to counter drone. Sound pressure waves are reflected within the muffler case and unwanted noise frequencies are cancelled through patented Refective Sound Cancellation™ technology. Their straight-through design coupled with RSC™ noise cancellation technology allows them to tune out the undesirable low frequencies that cause droning, while reducing back pressure. A reduction in back pressure allows the engine to produce more horsepower and torque. The end result is a tuned muffler that produces the best sound and performance possible.

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Dinan Free Flow Exhaust Systems

Dinan BMW mufflers and exhaust systems enhance the sound while improving performance through lighter weight and more power. A Dinan exhaust does not just produce a great sound but more power and torque as well. Dinan's exhaust is tuned around the engine size and the rest of the exhaust layout to flow better and produce a more attractive sound. A special internal design minimizes drone. Tips with the Dinan logo are the finishing touch. Made entirely from stainless steel, the Dinan exhaust should outlive the car.

Exhaust Gaskets Hangers and Parts

Exhaust systems are typically split among multiple sections and each section has its own form of fasteners and attachment points. The gaskets, hangers, and seals that join each section together should be replaced any time the exhaust is removed. As the exhaust is tightened together the gaskets and seals are crushed or deformed to form a tight seal. Re-using them is possible but greatly opens up the potential for an exhaust leak. Exhaust leaks can lead to a number of major and minor problems including power loss, check engine faults, and noise issues. Replacing your hangers and gaskets will ensure you don't have to take the exhaust down all over again.

Exhaust Muffler Tips

Looking to enhance the appearance of your exhaust but don't want to buy a full system or change the sound? Exhaust tailpipe tips replace or cover the existing tips and give your muffler the sporty appearance of full performance exhausts. The muffler tips we sell are designed to blend with the bodywork and styling of your BMW and not look out of place or garrish. Many of the tip sets we sell are factory BMW accessory parts.

Exhaust System Upgrades

A performance exhaust is a modification that you get constant benefit from - at every change of the throttle you are rewarded with that tuned sound. It's not like other modifications where you may not realize all of its benefits all the time. It's an upgrade that you enjoy at all times when you're behind the wheel. We offer exhaust upgrades from multiple performance manufacturers like Borla, Corsa, Supersprint, and Akrapovic but we have also developed or sourced other exhaust systems to meet specific needs.

OEM Replacement Mufflers and Exhaust Systems

Looking for an stock-type muffler or exhaust system? We also offer mufflers and exhausts from the original manufacturer - the same exhaust design you would buy at your dealer but at huge savings! These exhausts are built to the same sizing and specs as the original becuase most of these manufacturers made them for BMW originally. They fit the same way with the original mounting hangers and brackets. A true direct replacement exhaust!

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Oxygen Sensor - O2 Sensors

Every new BMW, and all BMW cars made from 1980 on, have an oxygen sensor, often called an "O2 sensor". The oxygen sensor is part of your BMW's emissions control system and feeds data to BMW engine management computer. The oxygen sensor is positioned in the exhaust pipe and can detect rich and lean mixtures. The goal of the oxygen sensor is to help the engine run as efficiently as possible and also to produce as few emissions as possible. When your BMW oxygen sensor fails, the computer can no longer sense the air/fuel ratio, so it ends up guessing -- resulting in poor performance, poor gas mileage, and increased pollution. Make sure your BMW engine performs as it should, and doesn't use more fuel than it needs to by simply changing your oxygen sensor today. We carry Bosch oxygen sensors, and in some cases Genuine BMW oxygen sensors or OEM oxygen sensors.