Flowmaster Original 40 Series Offset Muffler - 2.25 in. (79-04 All, Excludes 99-04 Cobra)

Flowmaster Original 40 Series Offset Muffler - 2.25 in. (79-04 All, Excludes 99-04 Cobra)
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OUR PRICE$77.99(each)
Flowmaster Mustang Exhaust Kits
Item # 18458
Market Price $90.99You Save 14% ($13.00)
Ships the same business day

Product Features

  • Signature Flowmaster Sound
  • Original Two Chamber Technology
  • Offset inlet and outlet design
  • 2.25" inlet/outlet diameter
  • Aluminized Steel Construction
  • Sold Individually
That Flowmaster Sound. Improve your Mustangs exhaust flow for an increase in horsepower and a deeper throatier exhaust note with a set of Flowmaster 40 Series Mufflers for a truly classic muscle car sound.

Superior Design. The Flowmaster 40 Series Mufflers are MIG welded from durable 16 gauge aluminized steel for durability and value. The 40 series mufflers use Flowmasters original two chamber design to increase power and sound. And each muffler is embossed with the "Flowmaster" name so you know it is the real article.

Application. The 40 Series Muffler's outer case measures 4" x 9.75" x 13", and features a 2.25" diameter inlet and outlet in an offset configuration. This is the perfect muffler for the 1979 to 2004 Mustangs. Excludes 1999-2004 SVT Cobra.
40 Series Delta Flow versus 40 Series Original versus Super Flow 44 Series
  • Minimizes interior resonance
  • Aggressive exterior tone
  • Two Chambered Muffler
  • Made of Aluminized Steel
  • No minimization of interior resonance
  • Aggressive tone inside and out
  • Two Chambered Muffler
  • Made of Aluminized Steel
  • Delta Flow technology minimizes interior resonance
  • Aggressive deep powerful tone
  • Two Chambered Muffler
  • Made of Black Aluminized Steel

Installation Time:

(approx) 2 Hours

Difficulty Level:

Advanced mechanical skills required.

What's in the box?

  • (1) Muffler

What's in the box?

  • (1) Muffler
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Fitment:
  • V6 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • GT 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • Cobra 94, 95, 96, 97, 98
  • Mach 1 03, 04
  • Bullitt 01
  • Foxbody 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93

About Flowmaster

Flowmaster Mustang Exhaust Kits
Flowmaster, Inc. is a specialty performance aftermarket exhaust parts manufacturer. It was founded in 1983 by Ray Flugger. Originally created to minimize California Sprint Car engine noise without sacrificing performance, Flowmaster has grown to be one of the top performance manufacturers of performance exhaust systems, mufflers, racing mufflers, stainless steel mufflers, and exhaust accessories. Designed and developed for street & strip cars, muscle cars, trucks, diesel trucks, SUV's, motorhomes, ATVs and most everyday vehicles. The company is based out of Santa Rosa, California, Sacramento, California and Hayden, Idaho. Flowmaster performance exhaust products are 100% American Made for the World of Performance.

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