Buick GS 455 Performance Exhaust Mufflers

Your Buick GS 455 will be happy to know that the search for the right Performance Exhaust Mufflers you’ve been looking for is over! Advance Auto Parts has 1 different Performance Exhaust Mufflers for your vehicle, ready for shipping or in-store pick up. The best part is, our Buick GS 455 Performance Exhaust Mufflers start from as little as $134.99.

When it comes to your Buick GS 455, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Performance Exhaust Mufflers brands so you can shop with complete confidence. We’re sure you will get the right product to keep that GS 455 running for a long time.

We even have reviews of our OEM and aftermarket Performance Exhaust Mufflers products to help you buy with confidence. Hear from other customers via the 147 reviews on parts for your Buick GS 455.

Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Performance Exhaust Mufflers for your GS 455, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!

Compare 12 Buick Performance Exhaust Mufflers

Flowmaster Inc. – Super 44 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.942448)

Super 44 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound

from

$134.99
Flowmaster’s Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing four-inch case street muffler we’ve ever built! Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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Flowmaster Inc. – Super 44 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.842548)

Super 44 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound

from

$136.99
Flowmaster’s Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a rich powerful tone and are the most aggressive, highest performing street muffler we’ve ever built in a four inch case. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
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Flowmaster Inc. – 40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.42443)

40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound

from

$99.99
The Original 40 series muffler delivers an aggressive exterior and interior tone. If you’re looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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Flowmaster Inc. – 50 Series Muffler, 2in Offset Inlet 2in Center Outlet, Non-Reversible, Moderate Sound (Part No.942051)

50 Series Muffler, 2in Offset Inlet 2in Center Outlet, Non-Reversible, Moderate Sound

from

$169.99
The three chamber design utilizes Flowmaster’s patented Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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Flowmaster Inc. – Super 44 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound (Part No.942446)

Super 44 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound

from

$134.99
Flowmaster’s Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing four inch case street muffler we’ve ever built! Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
See More

Flowmaster Inc. – Super 44 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.942548)

Super 44 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound

from

$134.99
Flowmaster’s Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing four-inch case street muffler we’ve ever built! Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
See More

Flowmaster Inc. – 40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound (Part No.42441)

40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound

from

$99.99
The Original 40 series muffler delivers an aggressive exterior and interior tone. If you’re looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
See More

Flowmaster Inc. – 50 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Moderate Sound (Part No.842453)

50 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Moderate Sound

from

$184.99
The three chamber design utilizes Flowmaster’s patented Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
See More

Flowmaster Inc. – 40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound (Part No.8042441)

40 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Aggressive Sound

from

$132.99
The Original 40 series muffler delivers an aggressive exterior and interior tone. If you’re looking for that original Flowmaster sound this is the muffler is for you. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
See More

Flowmaster Inc. – Super 44 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.842448)

Super 44 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound

from

$136.99
Flowmaster’s Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a rich powerful tone and are the most aggressive, highest performing street muffler we’ve ever built in a four inch case. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
See More

Flowmaster Inc. – 50 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Moderate Sound (Part No.942451)

50 Series Muffler, 2.25in Offset Inlet 2.25in Center Outlet, Non-Reversible, Moderate Sound

from

$169.99
The three chamber design utilizes Flowmaster’s patented Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
See More

Flowmaster Inc. – Super 40 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.952548)

Super 40 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound

from

$149.99
The Super 40 features Flowmaster’s Delta Flow technology. It’s larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow technology. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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