Flowmaster Catted H-Pipe (99-04 GT)

Flowmaster Catted H-Pipe (99-04 GT)
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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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OUR PRICE$613.99
Market Price $794.99You Save 23% ($181.00)
Item # 18465
Ships the same business day
Add O2 Sensor Extension Kit
PRICE WITH OPTIONS $613.99
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Product Features

  • Improves exhaust flow and sound
  • Classic muscle car rumble
  • 2-1/4" mandrel bent stainless steel tubing
  • High flow catalytic converters included
  • 49 state emissions legal
  • For use with stock manifolds or shorty aftermarket headers
  • Fits 1999-2004 GT and Bullitt Mustangs
Improves Flow For More Power. Improve the horsepower and torque of your 4.6L GT Mustang by replacing those restrictive stock factory cats with a brand new Flowmaster H-Pipe that features high-flow catalytic converters. The Flowmaster high flow catted H-pipe will significantly improve your Mustang's exhaust flow for a notable increase in horsepower and torque.

Muscle Car Rumble. This free flowing Flowmaster mid-pipe will not only improve performance, but it will also add a deep muscle car rumble to the sound of your exhaust with its classic "H" crossover pipe design.

Quality Construction. Constructed in the USA from durable 2.25" 16 gauge 409 stainless steel tubing for it's corrosion resistant properties this Flowmaster H-Pipe features four high flow catalytic converters, two main cats and two pre-cats. The included catalytic converters feature a durable ceramic substrate material making them perfect for naturally aspirated applications.

49 State Legal. The included catalytic converters meet or exceed USEPA standards and are 49 state emissions legal. They are not legal for use in the state of California.

Application. This Flowmaster High Performance Catted H-Pipe is designed to be a direct bolt-on replacement for the 1999-2004 4.6L V8 Mustangs, including the GT and Bullitt models with either aftermarket shorty headers or the stock factory manifolds installed.

Technical note: 2004 Mustangs require the use of 24" O2 sensor plug-in extender wires.

Mid Pipe Specifications
Style Mid Pipe: Standard length "H" Type Headers Required: Shorty or stock manifolds
Piping Material: Stainless Steel Piping Size: 2.25"
Catalytic Converter: "Yes" Fitment: 1999-2004 GT & Bullitt Mustangs

Installation Time:

(approx) 2 Hours

Difficulty Level:

Advanced mechanical skills required.

What's in the box?

  • (1) Catted H-pipe
  • (2) clamps

What's in the box?

  • (1) Catted H-pipe
  • (2) clamps
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Fitment:
  • GT 99, 00, 01, 02, 03, 04
  • Bullitt 01

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