Pontiac Firebird Exhaust Mufflers

Your One-Stop Shop For Trusted Pontiac Firebird Exhaust Mufflers

If you’re in search of Pontiac Firebird Exhaust Mufflers aftermarket or OEM parts, consider your search over! Advance Auto Parts carries 25 Exhaust Mufflers from top brands with prices ranging from $56.99 to $249.99.

Beyond great prices, we stock trusted brands manufacturing all types of Exhaust Mufflers for your Pontiac Firebird.

And don’t forget to read customer reviews across all Exhaust Mufflers categories in our catalog. Buy with confidence by leveraging past customer experiences of our aftermarket and OEM parts.

At Advance Auto Parts, we don’t think top quality Exhaust Mufflers have to cost top dollar, and we prove it. Browse our top Pontiac Firebird Exhaust Mufflers below, order online to ship to your home, or head into your nearest Advance Auto Parts location to get started.

Essential Pontiac Firebird Exhaust Mufflers

Walker – SoundFX Direct Fit Exhaust Muffler 2.25" Inlet (ID) 2.25" Outlet (ID) (Part No.18235)

SoundFX Direct Fit Exhaust Muffler 2.25" Inlet (ID) 2.25" Outlet (ID)

from

$81.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.

Product Features:
  • RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
  • BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
  • FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
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Flowmaster Inc. – 40 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.42543)

40 Series Muffler, 2.5in Offset Inlet 2.5in 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, 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

$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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Walker – SoundFX Muffler, Universal/ Fabrication Needed (Part No.18141)

SoundFX Muffler, Universal/ Fabrication Needed

from

$61.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX universal mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.

Product Features:
  • RESISTS CORROSION — Aluminized steel construction and internal drainage system helps reduce corrosion
  • BUILT TO LAST — Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • FLEXIBLE SOLUTION — Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • FACTORY SOUND — Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • GET MORE MILES FROM YOUR MUFFLER — Designed and tested to extend muffler life
See More

Walker – Sound Solution Exhaust Muffler (Part No.18679)

Sound Solution Exhaust Muffler

from

$60.99
Sound Solution mufflers are engineered with 100% aluminized steel for longer service life compared to low carbon steel. These mufflers have mechanical interior joints for durability, And spun-locked heads for resistance to rupture from backfires. Sound Solution mufflers are available in a universal fitment style, with both quality appearance And favorable acoustics.
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Flowmaster Inc. – 50 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Moderate Sound (Part No.842553)

50 Series Muffler, 2.5in Offset Inlet 2.5in 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.
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Flowmaster Inc. – 80 Series Muffler, 2.5in Dual Offset Inlet 2.5in Dual Offset Outlet, 13in long, Aggressive Sound (Part No.42582)

80 Series Muffler, 2.5in Dual Offset Inlet 2.5in Dual Offset Outlet, 13in long, Aggressive Sound

from

$249.99
The 80 series is a cross-flow design for applications where the muffler is mounted transversely behind the rear end. Delivering an aggressive muscle car sound both inside and outside the vehicle, this is an excellent replacement for Camaros & Firebirds with transverse mufflers. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
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Walker – SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID) (Part No.18375)

SoundFX Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID)

from

$78.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX direct-fit mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.

Product Features:
  • RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
  • BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation that doesn’t require specialized fabrication and welding
  • FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
See More

Flowmaster Inc. – 40 Delta Muffler 409S – 2.25 Offset In / 2.25 Offset Out – Aggressive Sound (Part No.842443)

40 Delta Muffler 409S - 2.25 Offset In / 2.25 Offset Out - Aggressive Sound

from

$161.99
This two chamber design incorporates Flowmaster’s patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
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Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 2.25" Inlet (ID) 2" Outlet (ID) (Part No.22253)

Quiet-Flow SS Direct Fit Exhaust Muffler 2.25" Inlet (ID) 2" Outlet (ID)

from

$107.99
Product Features:
  • CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
  • EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
  • BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
  • DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
  • BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
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Flowmaster Inc. – Super 44 Series Muffler, 3in Offset Inlet 3in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.943048)

Super 44 Series Muffler, 3in Offset Inlet 3in 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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Walker – Sound Solution Exhaust Muffler (Part No.18695)

Sound Solution Exhaust Muffler

from

$64.99
Sound Solution mufflers are engineered with 100% aluminized steel for longer service life compared to low carbon steel. These mufflers have mechanical interior joints for durability, And spun-locked heads for resistance to rupture from backfires. Sound Solution mufflers are available in a universal fitment style, with both quality appearance And favorable acoustics.
See More

Walker – Quiet-Flow Direct Fit Exhaust Muffler 2" Inlet (ID) 2.25" Outlet (ID) (Part No.21598)

Quiet-Flow Direct Fit Exhaust Muffler 2" Inlet (ID) 2.25" Outlet (ID)

from

$56.99
Product Features:
  • EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
  • RESISTS CORROSION – Internal drainage system helps reduce moisture collection
  • BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
  • DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
  • BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
See More

Flowmaster Inc. – 40 Series Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.942543)

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

from

$149.99
This two chamber design incorporates Flowmaster’s patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.
See More

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

$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

Walker – Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID) (Part No.21417)

Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (ID)

from

$158.99
Product Features:
  • CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler with 100% stainless-steel construction that delivers longer life versus aluminized mufflers while an internal drainage system reduces moisture collection
  • EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets and pipe routings for easy installation and doesn’t require specialized fabrication and welding
  • BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • PREMIUM ACOUSTIC CONTROL – OE-style louvered tubes lower noise levels while OE-style domed heads help reduce radiated noise for premium factory-style sound quality compared to straight perforated tubes
  • DESIGN VALIDATED – Acoustic and flow tested for quality OE-style sound you can count on
  • BUY WITH CONFIDENCE – Comes with Walker’s limited warranty and exclusive 90-Day Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
See More

Flowmaster Inc. – 40 Series Muffler, 2in Offset Inlet 2in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.942043)

40 Series Muffler, 2in Offset Inlet 2in Offset Outlet, Non-Reversible, Aggressive Sound

from

$149.99
This two chamber design incorporates Flowmaster’s patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over Original 40 series. 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.942453)

50 Series Muffler, 2.25in Offset Inlet 2.25in Offset 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

Walker – SoundFX Muffler, Universal/ Fabrication Needed (Part No.18119)

SoundFX Muffler, Universal/ Fabrication Needed

from

$78.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX universal mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.

Product Features:
  • RESISTS CORROSION — Aluminized steel construction and internal drainage system helps reduce corrosion
  • BUILT TO LAST — Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • FLEXIBLE SOLUTION — Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation
  • FACTORY SOUND — Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • GET MORE MILES FROM YOUR MUFFLER — Designed and tested to extend muffler life
See More

BRExhaust – Exhaust Muffler (Part No.100-5053)

Exhaust Muffler

from

$161.99
This BRExhaust replacement exhaust is engineered based on the original OEM design to ensure reliability, durability and performance. The ease of installation will save you time and effort, getting you back out on the road sooner. Each muffler features thicker hangers for added strength and fully welded, perforated tubes to guarantee a long service life.
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Flowmaster Inc. – Delta 40 Muffler, 2.5in Offset Inlet 2.5in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.842543)

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

from

$164.99
This two chamber design incorporates Flowmaster’s patented Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability.
See More

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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Hooker Headers – Aero Chamber Muffler (Part No.21729HKR)

Aero Chamber Muffler

from

$236.99
Aero Chamber Muffler

Dynomax – Super Turbo Muffler: Di Fit Aluminized Steel, 19" L, 2.5" In, 2.5" Out, Oval (Part No.17739)

Super Turbo Muffler: Di Fit Aluminized Steel, 19" L, 2.5" In, 2.5" Out, Oval

from

$84.99
Dynomax Super Turbo performance mufflers’ exclusive, patented, flow director design channels exhaust flow, and eliminates turbulence on most applications. The large internal flow tubes improve exhaust flow, and reduce backpressure. Each muffler uses fiberglass matting technology to absorb unwanted interior resonance, while maintaining a mellow performance tone.

Product Features:
  • Large internal flow tubes improve exhaust flow and reduce backpressure
  • Dyno proven to flow up to 700 SCFM
  • Exclusive patented flow director channels exhaust flow and eliminates turbulence on most applications.
  • Fiberglass matting technology absorbs unwanted interior resonance but maintains a mellow tone
  • 1.75-inch to 3-inch inlet / outlet configurations
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Walker – SoundFX Universal Exhaust Muffler 2.25" Inlet (ID) 2" Outlet (ID) (Part No.18104)

SoundFX Universal Exhaust Muffler 2.25" Inlet (ID) 2" Outlet (ID)

from

$75.99
Featuring 100% aluminized steel for longer service life compared to low-carbon steel, Walker SoundFX universal mufflers deliver quality appearance and favorable acoustics while mechanical interior joints and spun-locked heads provide durability.

Product Features:
  • RESISTS CORROSION – Aluminized steel construction and internal drainage system helps reduce corrosion
  • BUILT TO LAST – Internal partitions and mechanically joined tubes allow expansion and contraction during temperature changes to minimize distortion while spun-locked heads and OE-style spot welds provide stability and longer service life
  • FLEXIBLE SOLUTION – Customizable design features expandable bushings for easy fitment and may require specialized fabrication and welding for installation
  • FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • GET MORE MILES FROM YOUR MUFFLER – Designed and tested to extend muffler life
See More

Exhaust Mufflers Brands You Can Trust For Your Pontiac Firebird

5 trusted brands of Exhaust Mufflers line our shelves, ready to help keep your Pontiac Firebird running smooth. Below are some of the most popular brands and their top Exhaust Mufflers offerings:

Popular Walker Exhaust Mufflers

Walker products for the Pontiac Firebird span several categories. Some of the highest-rated Walker Exhaust Mufflers that will fit your Pontiac Firebird are:
Sound Solution Exhaust Muffler
from $64.99
(3)
Sound Solution Exhaust Muffler
Mufflers

Top Pontiac Firebird Exhaust Mufflers from Flowmaster Inc.

Your Pontiac Firebird will be purring again thanks to Flowmaster Inc. brand Exhaust Mufflers available for online order or in-store pick up. Popular Flowmaster Inc. parts include:

Most Purchased Pontiac Firebird Exhaust Mufflers from Flowmaster Inc.

When you buy the most frequently purchased Flowmaster Inc. brand Exhaust Mufflers, you can be confident it will be the right part for your Pontiac Firebird. Here are the Flowmaster Inc. Exhaust Mufflers Advanced Auto customers buy the most:
Quiet-Flow Direct Fit Exhaust Muffler 2" Inlet (ID) 2.25" Outlet (ID)
from $56.99
This product is not rated
Quiet-Flow Direct Fit Exhaust Muffler 2" Inlet (ID) 2.25" Outlet (ID)
Mufflers

FAQs for Pontiac Firebird Exhaust Mufflers

What are the most purchased Exhaust Mufflers for the Pontiac Firebird?

Out of 25 Exhaust Mufflers for the Pontiac Firebird, the most popular in our inventory are:
Quiet-Flow Direct Fit Exhaust Muffler 2" Inlet (ID) 2.25" Outlet (ID)
from $56.99
This product is not rated
Quiet-Flow Direct Fit Exhaust Muffler 2" Inlet (ID) 2.25" Outlet (ID)
Mufflers

What are the top-rated Pontiac Firebird Exhaust Mufflers?

Top-rated Exhaust Mufflers for your Pontiac Firebird based on customer reviews/ratings are:
Super 44 Series Muffler, 3in Offset Inlet 3in Offset Outlet, Non-Reversible, Aggressive Sound
from $134.99
(1)
Super 44 Series Muffler, 3in Offset Inlet 3in Offset Outlet, Non-Reversible, Aggressive Sound
“Had this super 44 installed on my 2018 Chevrolet Silverado 2500HD… sounds very nice.”
50 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Moderate Sound
from $169.99
(1)
50 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Moderate Sound
“Love the sound,but a baffle came loose inside one of the mufflers after only a couple of years. Now it rattles. Go stainless steel.”