2009 Ford Mustang Mufflers

Enhance and Protect Your 2009 Ford Mustang with Quality Mufflers

Maintaining the performance of your 2009 Ford Mustang starts with choosing the right parts, and high-quality Mufflers help ensure a reliable and efficient vehicle. At Advance Auto Parts, we offer Mufflers specifically for the 2009 Ford Mustang, ensuring a perfect fit and lasting durability. Choosing to shop with Advance Auto Parts means you’re making a smart decision to prioritize both quality and reliability for your vehicle.

Affordable and Reliable Mufflers for Every Budget

Finding affordable, quality Mufflers is easy at Advance Auto Parts. With prices starting as low as $78.99 and an average price of $152.06, you can choose one that fits your budget while delivering the quality you expect. Our Mufflers are competitively priced, ranging from $78.99 to $244.99, so you get value without compromising on strength or reliability.
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Mufflers for Your 2009 Ford Mustang

Walker – Quiet-Flow SS Direct Fit Exhaust Muffler Assembly 2.5" Inlet (ID) 3" Outlet (OD) (Part No.53739)

Quiet-Flow SS Direct Fit Exhaust Muffler Assembly 2.5" Inlet (ID) 3" Outlet (OD)

from

$192.99
Product Features:
  • CORROSION RESISTANT STAINLESS STEEL – The only broad-market muffler body 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. – 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

$101.99
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. – 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

$101.99
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. – 40 Series Muffler, 2.25in Offset Inlet 2.25in Offset Outlet, Non-Reversible, Aggressive Sound (Part No.8042443)

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

from

$135.99
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.
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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

$139.99
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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Walker – Quiet-Flow SS Direct Fit Exhaust Muffler Assembly 2.5" Inlet (ID) 2.5" Outlet (OD) (Part No.53630)

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

from

$149.99
Combining the only broad-market stainless-steel body construction with a direct fit OE-style replacement, Walker Quiet-Flow SS muffler assemblies deliver longer life than typical aluminized mufflers and are available for domestic and foreign vehicles.

Product Features:
  • CORROSION RESISTANT STAINLESS STEEL : The only broad-market muffler body 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/or 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 limited Safe and Sound Guarantee. Visit Walkerexhaust.com for details.
See More

Dynomax – Ultra Flo Exhaust Muffler: Direct Fit, Stainless Steel, 14" L, 2.5" In, 3.5" Out, Oval (Part No.17571)

Ultra Flo Exhaust Muffler: Direct Fit, Stainless Steel, 14" L, 2.5" In, 3.5" Out, Oval

from

$244.99
DynoMax Ultra Flo Welded performance stainless steel mufflers feature 100-percent welded construction for lifelong durability. The unrestricted, straight-through design dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower. Each muffler uses our exclusive Continuous Roving Fiberglass (CRF) Technology to absorb unwanted interior resonance while maintaining a deep performance tone.

Product Features:
  • Stainless steel construction for lifelong protection
  • 100% welded design for maximum durability
  • Straight through design ensures unrestricted exhaust flow and reduces back pressure
  • CRF Technology absorbs unwanted interior resonance while maintaining a deep performance tone
  • Dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower.
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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

$168.99
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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BRExhaust – Exhaust Muffler Assembly (Part No.100-8268)

Exhaust Muffler Assembly

from

$179.99
This BRExhaust muffler assembly is constructed by one of the leading aftermarket suppliers to provide OE-style performance and maintain a factory-like sound. The direct-fit configuration allows for easy, bolt-on installation with no modifications required. The component is designed to offer corrosion protection in addition to optimal noise reduction and low backpressure. Built from 16-gauge steel tubing and fully aluminized, these mufflers feature an OE-style direct fit configuration compatible with your import or domestic vehicle-while the interior design of the muffler box ensures quiet performance.
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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

$165.99
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. – 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

$152.99
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.
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Walker – Soundfx Direct Fit Exhaust Muffler, 2.25" Inlet (Id) 2.5" Outlet (Od) (Part No.28020)

Soundfx Direct Fit Exhaust Muffler, 2.25" Inlet (Id) 2.5" Outlet (Od)

from

$104.99
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
  • RESISTS CORROSIONá–áAluminized steel construction and internal drainage system helps reduceácorrosion
  • 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
  • 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 weldsáprovideástability and longer service life
  • 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/or welding
  • EASY TO INSTALL – Direct-fit bolt-on replacement solution with OE-style hangers, brackets andápipeároutings for easy installation and doesn’t require specialized fabricationáand/or welding
  • FACTORY SOUND – Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes
  • FACTORY SOUNDá-áLouvered 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. – Flowmaster Flow FX Muffler (Part No.71235)

Flowmaster Flow FX Muffler

from

$78.99
Flowmaster’s Flow FX series mufflers deliver a moderate performance tone for the enthusiast looking for an exhaust note that is different from the “chambered” muffler sound. The interior features a large 3.00-inch “straight-through” stainless steel perforated core, surrounded with high-temperature sound absorption materials delivering a deep traditional mellow tone. The internal flow design is reversible, so the muffler can be installed in either direction to best suit the vehicle application and offsets needed. Features include fully MIG-welded “bright” 409 stainless steel construction with the Flow FX logo embossed on both sides of the case. The Flow FX line of mufflers is perfect for the person looking for a show quality performance muffler at an economical price point and in a compact sized case.

Product Features:
  • Flowmaster quality
  • Straight through design
  • Moderate exterior performance tone
  • Durable fully welded 409S stainless steel case
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Flowmaster Inc. – Flowmaster Flow FX Muffler (Part No.71236)

Flowmaster Flow FX Muffler

from

$78.99
Flowmaster’s Flow FX series mufflers deliver a moderate performance tone for the enthusiast looking for an exhaust note that is different from the “chambered” muffler sound. The interior features a large 3.00-inch “straight-through” stainless steel perforated core, surrounded with high-temperature sound absorption materials delivering a deep traditional mellow tone. The internal flow design is reversible, so the muffler can be installed in either direction to best suit the vehicle application and offsets needed. Features include fully MIG-welded “bright” 409 stainless steel construction with the Flow FX logo embossed on both sides of the case. The Flow FX line of mufflers is perfect for the person looking for a show quality performance muffler at an economical price point and in a compact sized case.

Product Features:
  • Flowmaster quality
  • Straight through design
  • Moderate exterior performance tone
  • Durable fully welded 409S stainless steel case
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FAQs for 2009 Ford Mustang Mufflers

Which Mufflers are the top sellers for the 2009 Ford Mustang?

How can I make sure that a part will be compatible with my 2009 Ford Mustang?

Our Ford Mustang aftermarket and OEM parts are designed specifically for the 2009 model. You can always find your specific fitment and compatibility for your 2009 Ford on an individual product page.

What is the price range for 2009 Ford Mustang Mufflers?

The range of prices of Mufflers for the 2009 Ford Mustang goes from $78.99 up to $244.99 for the most premium parts.

What is the average price of 2009 Ford Mustang Mufflers?

2009 Ford Mustang Mufflers average $152.06 for our selection of OEM and aftermarket parts.

Does Advance Auto Parts sell Mufflers for other Ford Mustang model years?

Yes, we currently stock Mufflers for 45 model years of Ford Mustangs, from 1964 to 2017. Model years 2017, 2016, 2015, 2014, 2013, 2012, 2011, 2010, and 2008 are the most popular for Mufflers purchases.

Can I get help with 2009 Ford Mustang Mufflers orders?

Contact our customer support team, by chat or phone, through the help desk page, where you can find instant answers about Ford Mufflers and more.

What is your return policy for Ford Mustang Mufflers?

Advance Auto Parts keeps returns simple. For new Ford Mustang Mufflers and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.