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Flowmaster Original 40 Series Offset/Offset Oval Muffler - 2.25 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 399090
  • MPN# 8042443

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Features & Details

  • Undeniable Flowmaster Sound
  • Quality Two-Chamber Technology
  • Produces More Sound and Power
  • Designed with Offset Inlet/Outlet
  • Inlet/Outlet Diameter: 2.25"
  • Aluminized Steel Formation
  • Lifetime Limited Warranty
  • Fits 1979 to 2004 Mustangs, Excluding 1999-2004 Cobra
Classic Flowmaster Sound and Increased Horsepower. The internal combustion engine concealed beneath your Mustang's shiny exterior will emit a throatier, richer sound once the Flowmaster Original 40 Series Offset/Offset Oval Muffler - 2.25 has been fitted. Aside from the impact this muffler will have on the sound emitted from your car's exhaust, it will also churn out massive amounts of horsepower.

Sleek and Sporty Chambered Design. Mustang's equipped with the Flowmaster Original 40 Series Offset/Offset Oval Muffler will have a modified appearance. Embossed with the brand name, the muffler has a sturdy outer casing and two MIG-welded chambers.

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

Application. The Flowmaster Original 40 Series Offset/Offset Oval Muffler - 2.25 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. 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".

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

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