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4.7 stars - (33 Reviews)
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The Flowmaster 40 Series [tm] Delta Flow muffler has a lower interior resonance than others in the 40 series, but it still generates a powerful and aggressive sound outside the vehicle. It comes in either aluminized or stainless steel. An advantage of the stainless steel option is added durability and longevity. What makes Flowmaster products so unique is that their research and design facilities are always generating performance improvements; while the unique sound they create remains unmistakable. Using the SuperFlow SF-7100 engine dynamometer, Flowmaster engineers obtain exact technical data of each degree of cam rotation while showing the power numbers that really matter. Designed for today's heavy duty gas and diesel trucks, the 40 Series Delta Flow muffler will deliver improved performance, throttle response and mileage. Featuring a deeper, moderate tone with minimal resonance, it is ideal for trucks with modified engines. Some find that the most difficult aspect about working on that car or truck is the search for an outstanding source for quality parts. Top-quality parts and accessories are what mechanics need to keep that car in great condition however rough the driving. Even the best-designed cars and trucks will require periodic maintenance and replacement of damaged components.


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(Read reviews)
Our List Price: $99.70
with FREE Shipping
(>15) In Stock
Product SKU: 942041
Product Note: 40 Series(TM) Delta Flow; 2 in. Offset Inlet / Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle
1986 (86) Toyota Pickup


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(Read reviews)
Our List Price: $99.70
with FREE Shipping
(12) In Stock
Product SKU: 942043
Product Note: 40 Series(TM) Delta Flow; 2 in. Offset Inlet / Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle
1969 (69) Pontiac GTO


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Click to Enlarge Image is not vehicle specific
(Read reviews)
Our List Price: $99.70
with FREE Shipping
(12) In Stock
Product SKU: 942043
Product Note: 40 Series(TM) Delta Flow; 2 in. Offset Inlet / Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle Sub Model Engine
2004 (04) Ford Mustang Base  3.8L V6 


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Click to Enlarge

Click to Enlarge Image is not vehicle specific
(Read reviews)
Our List Price: $99.70
with FREE Shipping
(12) In Stock
Product SKU: 942043
Product Note: 40 Series(TM) Delta Flow; 2 in. Offset Inlet / Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle
1991 (91) Honda CRX


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Click to Enlarge Image is not vehicle specific

Click to Enlarge Image is not vehicle specific

Click to Enlarge Image is not vehicle specific
(Read reviews)
Our List Price: $99.70
with FREE Shipping
(>15) In Stock
Product SKU: 942041
Product Note: 40 Series(TM) Delta Flow; 2 in. Offset Inlet / Center Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle Sub Model
1999 (99) Ford Ranger EV 


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(Read reviews)
Our List Price: $99.70
with FREE Shipping
(>15) In Stock
Product SKU: 942442
Product Note: 40 Series(TM) Delta Flow; 2.25 in. Center Inlet / Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle
1998 (98) Jeep Cherokee


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Click to Enlarge

Click to Enlarge Image is not vehicle specific
(Read reviews)
Our List Price: $99.70
with FREE Shipping
(12) In Stock
Product SKU: 942043
Product Note: 40 Series(TM) Delta Flow; 2 in. Offset Inlet / Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle
1998 (98) Ford Taurus


Click to Enlarge

Click to Enlarge

Click to Enlarge Image is not vehicle specific
(Read reviews)
Our List Price: $99.70
with FREE Shipping
(12) In Stock
Product SKU: 942043
Product Note: 40 Series(TM) Delta Flow; 2 in. Offset Inlet / Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle Sub Model Engine
2000 (00) Ford Mustang Base  3.8L V6 


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Click to Enlarge
(Read reviews)
Our List Price: $99.70
with FREE Shipping
(>15) In Stock
Product SKU: 943043
Product Note: 40 Series(TM) Delta Flow; 3.0 in. Offset Inlet / Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Aggressive To Moderate Exterior Exhaust Note
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Street/Strip And Off Road Application
  • No Internal Packing To Blowout
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
  • Reduced Interior Resonance
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle Sub Model Engine
2009 (09) Dodge Challenger SRT8  6.1L V8 


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Click to Enlarge
(Read reviews)
Our List Price: $99.70
with FREE Shipping
(>15) In Stock
Product SKU: 942543
Product Note: 40 Series(TM) Delta Flow; 2.5 in. Offset Inlet / 2.5 in. Opposite Side Offset Outlet; Case Dimensions 4 in. x 9.75 in. x 13 in.; 19 in. Overall Length; Aluminized Steel
Features:
  • 3 Year Limited Warranty
  • Durable Fully Welded 16ga Aluminized Steel
  • Excellent Choice For Street Rods Cars and Trucks
  • Improved HP/TQ and Potential Mileage Improvement
  • Mild to Moderate Exterior Exhaust Tone
  • Minimal Interior Resonance
  • Premium Flowmaster Quality
  • Race Proven Patented Delta Flow® Technology
Inventory: In Stock
Condition: New

Shipping Options:
Free Ground Shipping
Additional Fitment Information: Catalog: F
Vehicle Sub Model Engine
2004 (04) Dodge Dakota Base  3.7L V6 


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Some of our Customer Reviews
Very Satisfied
Reviewer: lovingma

6/2/09 06:37 PM

Very satisfied. The order was correct and it was shipped and delivered in a timely manner. Usually I don't care about when I get things, but this time it was important and they shipped the day of...

Order Date | 5/26/09

Very Satisfied
Reviewer: edkranz

6/6/09 01:26 PM

I ordered spark plug wires for my 1988 BMW 325 super eta. The wires were the correct ones for the car. The super eta is somewhat unique and the wires from the first place I ordered were the wrong ...

Order Date | 5/14/09


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