1974 Pontiac Firebird Mufflers

Your 1974 Pontiac Firebird might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Mufflers you desperately need.

We currently carry 4 Mufflers to choose from for your 1974 Pontiac Firebird, and our inventory prices range from as little as $99.99 up to $154.99.

On top of low prices, Advance Auto Parts offers 1 different trusted brands of Mufflers for the 1974 Pontiac Firebird. We only sell parts from trusted brands like Flowmaster Inc. so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 222 reviews on our Mufflers for the 1974 Pontiac Firebird from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Mufflers stock in-person!

Mufflers for Your 1974 Pontiac Firebird

Flowmaster Inc. – Super 10 Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.842518)

Super 10 Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound

from

$99.99
Super 10 Series 409S stainless steel – single chamber mufflers. Intended for customers who desire the loudest and most aggressive sound they can find. Because these mufflers are so aggressive, they are recommended only for off highway use and not for street driven vehicles. These mufflers utilize the same patented Delta Flow technology that is found in Flowmaster’s other Super series mufflers to deliver maximum performance. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
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(1 reviews)
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Flowmaster Inc. – 50 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Moderate Sound (Part No.942553)

50 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Moderate Sound

from

$154.99
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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(1 reviews)
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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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(3 reviews)
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Flowmaster Inc. – 50 Series Muffler, 3in Offset Inlet 3in Offset Outlet, 17in long, Non-Reversible, Moderate Sound (Part No.943053)

50 Series Muffler, 3in Offset Inlet 3in Offset Outlet, 17in long, Non-Reversible, Moderate Sound

from

$154.99
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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FAQs for 1974 Pontiac Firebird Mufflers

What are the most popular Mufflers for the 1974 Pontiac Firebird?

With 1 brands you can trust, our most popular Mufflers for the 1974 Pontiac Firebird parts are:
40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound
from $99.99
(3)
40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound
Mufflers
Super 10 Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound
from $99.99
(1)
Super 10 Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound
Mufflers
50 Series Muffler, 3in Offset Inlet 3in Offset Outlet, 17in long, Non-Reversible, Moderate Sound
from $154.99
This product is not rated
50 Series Muffler, 3in Offset Inlet 3in Offset Outlet, 17in long, Non-Reversible, Moderate Sound
Mufflers

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