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Flowmaster Original 40 Series Offset/Offset Oval Muffler - 3.0 in. (79-04 All, Excluding 99-04 Cobra)

Market Price $103.99 You Save 12% ($12.05)
Our Price

$91.94 (each)

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  • Item 399092
  • MPN# 8043043

In Stock Ships same business day. Choose options to add to cart

Features & Details

  • Classic Flowmaster Sound
  • Original Two-Chamber Design
  • Increased Sound and Power
  • Designed with Offset Inlet/Outlet
  • Inlet/Outlet Diameter: 3.0"
  • Aluminized Steel Build
  • Flowmaster Warranty
  • Fits 1979 to 2004 Mustangs, Excluding 1999-2004 Cobra Models
Turn Heads with the Flowmaster Sound. Your Mustang is about to get mightier, because the Flowmaster Original 40 Series Offset/Offset Oval Muffler - 3.0 in is guaranteed to deliver better horsepower, improved performance and that classic Flowmaster rumble. Designed with the original two-chamber technology, this MIG-welded muffler is engraved with the brand name, so you can feel confident that you're investing in the real deal. Good value for money, this performance-boosting piece of apparatus will withstand heat and constant use.

Strong Aluminum Design. Boasting an exquisite physical appearance, the Flowmaster Original 40 Series was built with aluminized steel. It is this steel construction that makes it a hard-wearing choice for track drivers. The two-chambered build contributes to noise reduction and adds aesthetic appeal to the already stunning Mustang.

Installation. The muffler contained in the box features an offset configuration to perfectly match its inlet/outlet diameter. Set aside at least two hours for installation, which is described as "light to moderate."

Warranty. With every purchase of a 40 Series Offset/Offset Oval Muffler, a Lifetime Limited Warranty comes as standard. Flowmaster's warranty can be redeemed by the original purchaser. Coverage remains valid for workmanship or material-related defects. It is void in cases of misuse, poor installation and normal wear.

Application. The Flowmaster Original 40 Series Offset/Offset Oval Muffler - 3.0 in is specially crafted for application with all Mustang models between the years 1979 and 2004. The set is not suitable for 1999-2004 Cobra Mustangs.

Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) Muffler
  • Installation Guide
Installation Info
Will it fit my Mustang?
  • Foxbody - 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93
  • GT - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • V6 - 94, 95, 96, 97, 98, 99, 00, 01, 02, 03, 04
  • Bullitt - 01
  • Cobra - 94, 95, 96, 97, 98, 93
  • Mach 1 - 03, 04

Not Compatible with 1999-2004 Cobra Models

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