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Flowmaster 40 Series Delta Flow Offset/Offset Oval Muffler - 2.0 in. (79-04 All, Excluding 99-04 Cobra)

Market Price $112.99 You Save 12% ($13.29)
Our Price

$99.70 (each)

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  • Item 399052
  • MPN# 942043

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

Features & Details

  • Milder Exhaust Tone; Minimal Cabin Noise
  • Boosts Torque and Horsepower
  • Reflection Muffler Style w/ 2 Chambers
  • 2" Aluminized Steel
  • Outlet Style: Standard with No Tip
  • Cut and Clamp Mounting
  • Sold Individually
  • Fits All 1979-2004 Mustangs, Excluding 1999-2004 Cobra
More Natural Tone. Flowmaster's 40 Series Delta Flow Offset/Offset Oval Muffler takes everything you love about the 40 Series — power gains, that distinct Flowmaster tone — and adds their patented Delta Flow technology for a quieter cabin. You'll get a more street-legal rumble for your Mustang and a more muted tone for the interior.

Increases Torque/Horsepower. Is your stock muffler robbing your 'Stang's performance? The two-chamber, precision-deflector design of the Flowmaster 40 Series Delta Flow Center/Offset Oval Muffler supercharges your exhaust, giving you a marked increase in torque and horsepower.

Tough Construction. The Flowmaster 40 Series Delta Flow Center/Offset Oval Muffler is crafted from durable 16-gauge aluminized steel and is completely MIG-welded for the ultimate in strength and durability. 40 Series Mufflers also don't have any packing, so there's nothing to blow out.

Cut & Clamp Installation. Flowmaster makes it easy to install the 40 Series Delta Flow Muffler. With the proper clamps and hangers (not included), installation should take you less than two hours.

Application. The Flowmaster 40 Series Delta Flow Center/Offset Oval Muffler is built specifically to fit all 1979-2004 Mustangs, excluding 1999-2004 Cobras.

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 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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