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Muffler for 2009 Ford Mustang

We have 15 Items In-stock. Select your vehicle's Submodel to continue.

Flowmaster - Super 44 Series Delta Flow Mufflers

FLOWMASTER – SUPER 44 SERIES DELTA FLOW MUFFLERS

Flowmaster’s Super 44 Series Delta Flow mufflers will make you stand out in a crowd (but might not make you a favorite with your neighbors) – surely one of the reasons they’re a top choice for high horsepower performance vehicles. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Increases torque and horsepower
  • 3-year warranty for aluminized steel, lifetime warranty for stainless steel
  • Fully MIG-welded for maximum strength
  • Come in stainless steel and 16-gauge aluminized steel
  • Distinct, super aggressive tone – the most aggressive of Flowmaster’s line-up
  • Doesn’t have any internal packing that can be blown out
  • Fabricated utilizing patented Delta Flow process and 2-chamber design
  • Quick and easy installation
  • Primarily designed for and used on high horsepower performance vehicles
  • Dyno-tested

Flowmaster Super 44 Series Muffler - Black, Aluminized Steel, Minor Modifications

Best Seller
$83.90 $109.67 You Save $25.77 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 942448
  • Series: Flowmaster Super 44 Series
  • Material: Aluminized Steel
  • Color/Finish: Black
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.25 in.
  • Overall Length: 19 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 6 Cyl 4.0L | Base
See more
Customer Review: (see review/s)
  • My wifes 2003 Mustang GT had holes in the original factory mufflers so it was time for a replacement. Went with a pair of MagnaFlows first but she didnt like their sound level (too quiet). Replaced them with the FlowMaster Super 44s and now shes a happy camper. The have a beautiful exterior tone not too loud but very aggressive. The interior is very quiet though with almost no resonance. I prefer a little more noise inside but she doesnt. Best of both worlds. Had these installed at a local muffler shop for best results. Dont want any exhaust gas leaks.

    posted by: Gangster of Love on February 6, 2013

  • view all 5 reviews

Flowmaster Super 44 Series Muffler - Black, Stainless Steel, Minor Modifications

Best Seller
$94.44 $123.45 You Save $29.01 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 842548
  • Series: Flowmaster Super 44 Series
  • Material: Stainless Steel
  • Color/Finish: Black
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.5 in.
  • Overall Length: 19 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 8 Cyl 4.6L | GT, Bullitt
  • 8 Cyl 5.4L | Shelby GT500, Shelby GT500KR
See more

Flowmaster Super 44 Series Muffler - Black, Stainless Steel, Minor Modifications

$94.44 $123.45 You Save $29.01 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 842448
  • Series: Flowmaster Super 44 Series
  • Material: Stainless Steel
  • Color/Finish: Black
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.25 in.
  • Overall Length: 19 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 8 Cyl 4.6L | GT, Bullitt
  • 6 Cyl 4.0L | Base
  • 8 Cyl 5.4L | Shelby GT500, Shelby GT500KR
See more

Flowmaster - 40 Series Original Mufflers

FLOWMASTER – 40 SERIES ORIGINAL MUFFLERS

Flowmaster’s 40 Series Original mufflers turn give your ride that rich muscle car rumble and turn it into a performance powerhouse with an aggressive, deep tone that will make you smile as you put the pedal to the metal. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Great for muscle cars or vehicles that need a single exhaust
  • Backed by a lifetime warranty for stainless/3 years for aluminized steel
  • Fully MIG-welded for maximum strength
  • Comes in 16-gauge aluminized steel or stainless steel
  • Quick and easy installation
  • Very aggressive tone
  • Improves torque and horsepower
  • Come in single or dual pipe style
  • Dyno-tested

Flowmaster 40 Series Original Muffler - Gray, Aluminized Steel, Minor Modifications

Best Seller
$81.32 $106.31 You Save $24.99 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 42543
  • Series: Flowmaster 40 Series Original
  • Material: Aluminized Steel
  • Color/Finish: Gray
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.5 in.
  • Overall Length: 19 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 8 Cyl 4.6L | GT, Bullitt
  • 8 Cyl 5.4L | Shelby GT500, Shelby GT500KR
See more

Flowmaster 40 Series Original Muffler - Gray, Aluminized Steel, Minor Modifications

Best Seller
$81.32 $106.31 You Save $24.99 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 42443
  • Series: Flowmaster 40 Series Original
  • Material: Aluminized Steel
  • Color/Finish: Gray
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.25 in.
  • Overall Length: 19 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 6 Cyl 4.0L | Base
See more

Flowmaster 40 Series Original Muffler - Gray, Stainless Steel, Minor Modifications

Best Seller
$87.08 $113.84 You Save $26.76 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 8042543
  • Series: Flowmaster 40 Series Original
  • Material: Stainless Steel
  • Color/Finish: Gray
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.5 in.
  • Overall Length: 19 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 8 Cyl 4.6L | GT, Bullitt
  • 8 Cyl 5.4L | Shelby GT500, Shelby GT500KR
See more

Flowmaster - 40 Series Delta Flow Mufflers

FLOWMASTER – 40 SERIES DELTA FLOW MUFFLERS

Flowmaster’s 40 Series Delta Flow mufflers give your daily driver a noticeable edge with a deep, aggressive tone while still keeping it quieter on the inside. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Increases torque and horsepower
  • 3-year warranty for aluminized steel, lifetime warranty for stainless steel
  • Fully MIG-welded for maximum strength
  • Come in stainless steel and 16-gauge aluminized steel
  • Distinct, aggressive tone with reduced interior sound
  • Fabricated utilizing patented Delta Flow process and 2-chamber design
  • Quick and easy installation
  • For passenger cars
  • Dyno-tested

Flowmaster 40 Series Delta Flow Muffler - Gray, Stainless Steel, Minor Modifications

$108.08 $141.28 You Save $33.20 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 842443
  • Series: Flowmaster 40 Series Delta Flow
  • Material: Stainless Steel
  • Color/Finish: Gray
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.25 in.
  • Overall Length: 19 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 6 Cyl 4.0L | Base
See more

Flowmaster 40 Series Delta Flow Muffler - Gray, Aluminized Steel, Minor Modifications

Best Seller
$94.44 $123.45 You Save $29.01 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 942443
  • Series: Flowmaster 40 Series Delta Flow
  • Material: Aluminized Steel
  • Color/Finish: Gray
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.25 in.
  • Overall Length: 19 in.
  • Warranty: 3-year Flowmaster limited warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 6 Cyl 4.0L | Base
See more

Flowmaster 40 Series Delta Flow Muffler - Gray, Stainless Steel, Minor Modifications

$108.08 $141.28 You Save $33.20 (23%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 842543
  • Series: Flowmaster 40 Series Delta Flow
  • Material: Stainless Steel
  • Color/Finish: Gray
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Aggressive
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 13 in.
  • Case Shape: Oval
  • Height: 4 in.
  • Inlet Location: Offset
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Offset
  • Outlet Quantity: Single
  • Outlet Size: 2.5 in.
  • Overall Length: 19 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 9.75 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 8 Cyl 4.6L | GT, Bullitt
  • 8 Cyl 5.4L | Shelby GT500, Shelby GT500KR
See more

Flowmaster - Hushpower dBX Series Mufflers

FLOWMASTER – HUSHPOWER DBX SERIES MUFFLERS

Flowmaster’s Hushpower dBX Series mufflers give your Asian, Euro or domestic sports compact a noticeable edge with a refined tone that doesn’t sound like a ricebox, and boosts both performance and mileage to boot. Flowmaster, known as ‘the exhaust technology company,’ is a leading manufacturer of high performance exhaust systems and respected for design, innovation and engineering.

  • Increases torque, horsepower and fuel economy
  • Backed by a lifetime warranty
  • Come in stainless steel
  • Distinct, refined tone – great for commuters
  • Fabricated utilizing patented Laminar Flow process to customize tone
  • Quick and easy installation
  • Preferred by sub-compact/sports car drivers
  • Dyno-tested
  • Many sizes to accommodate most American, Euro and Asian cars

Flowmaster dBX Series Rear Muffler - Natural, Stainless Steel, Minor Modifications

$157.38 $205.73 You Save $48.35 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 12414310
  • Location: Rear
  • Series: Flowmaster dBX Series
  • Material: Stainless Steel
  • Color/Finish: Natural
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 14 in.
  • Case Shape: Round
  • Height: 6 in.
  • Inlet Location: Center
  • Inlet Quantity: Single
  • Inlet Size: 2.25 in.
  • Internal Construction: Chambered
  • Notes: Minor Modifications
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2.25 in.
  • Overall Length: 20 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 6 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 6 Cyl 4.0L | Base
See more

Flowmaster dBX Series Rear Muffler - Natural, Stainless Steel, Minor Modifications

$157.38 $205.73 You Save $48.35 (24%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Flowmaster 12514310
  • Location: Rear
  • Series: Flowmaster dBX Series
  • Material: Stainless Steel
  • Color/Finish: Natural
  • Product Fit: Minor Modifications
  • Quantity Sold: Sold Individually
  • Sound Level: Moderate
  • Recommended Use: Performance
  • Anticipated Ship Out Time: 1-2 Business Days
  • Attachment Style: Clamp-On or Weld-On (Recommended)
  • Body Length: 14 in.
  • Case Shape: Round
  • Height: 6 in.
  • Inlet Location: Center
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Internal Construction: Chambered
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2.5 in.
  • Overall Length: 20 in.
  • Warranty: Lifetime Flowmaster Limited Warranty
  • Width: 6 in.
See more

Fits the following 2009 Ford Mustang Submodels

  • 8 Cyl 4.6L | GT, Bullitt
  • 8 Cyl 5.4L | Shelby GT500, Shelby GT500KR
See more

Walker - Quiet-Flow SS Mufflers

WALKER – QUIET-FLOW SS MUFFLERS

Upgrade your exhaust system and tone with the sturdy, enhanced design of Walker’s Quiet-Flow SS mufflers. Established in 1908, Walker is renowned in the automotive aftermarket for manufacturing a full line of exhaust system parts.

  • Designed with OE-quality louvered tube technology for exhaust tone optimization
  • Made with sturdy stainless steel for enduring performance
  • Heads are securely spun-locked to prevent breakage
  • Strengthened by interior spot welds, partitions and bridge construction
  • Internal tubes connected to free-floating partition to permit expansion and contraction
  • Includes CRF (Continuous Roving Fiberglass) for enhancement of sound
  • Internal drainage system prevents acid build-up at muffler heads and between partitions

Walker Quiet-Flow3 Muffler - Natural, Aluminized Steel, Direct Fit

$108.67 $202.44 You Save $93.77 (46%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Walker 53630
  • Series: Walker Quiet-Flow3
  • Material: Aluminized Steel
  • Color/Finish: Natural
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Sound Level: Stock
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: Same day - 1 business day
  • Attachment Style: Clamp-On
  • Case Shape: Round
  • Inlet Location: Center
  • Inlet Quantity: Single
  • Inlet Size: 2.5 in.
  • Internal Construction: Turbo
  • Outlet Location: Center
  • Outlet Quantity: Single
  • Outlet Size: 2.5 in.
  • Warranty: Lifetime Walker limited warranty
See more

Fits the following 2009 Ford Mustang Submodels

  • 6 Cyl 4.0L | Base
See more

Walker Quiet-Flow SS Passenger Side Muffler - Direct Fit

$122.52 $231.32 You Save $108.80 (47%)
Add to Cart
Availability: In Stock
Only from APW Rewards
  • Brand SKU#: Walker 53739
  • Location: Passenger Side
  • Series: Walker Quiet-Flow SS
  • Product Fit: Direct Fit
  • Quantity Sold: Sold Individually
  • Recommended Use: OE Replacement
  • Anticipated Ship Out Time: Same day - 1 business day
  • Warranty: Lifetime Walker limited warranty
See more

Fits the following 2009 Ford Mustang Submodels

  • 8 Cyl 4.6L | GT, Bullitt
See more

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