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Twisted Steel Header & Y-Pipe 409 Stainless Steel w/ Cat

Ford F-150 04-08 V8-5.4L
Part Number: 48-43003-YC

MSRP: $2,354.63


Twisted Steel Headers Features:

  • Constructed out of 1-5/8 IN 16-Gauge Stainless Steel Mandrel-Bent Tubing
  • Utilizes 4-to-1 Formed Collectors
  • Optimized Tube Lengths
  • Utilizes Ball Socket Connections

Y-Pipe Features:

  • Constructed out of Mandrel-Bent Stainless Steel Tubing
  • True 2-to-1 Mitered Merge Collector Eliminates Dead Zone for Improved Flow
  • Mandrel-Bent 3 IN Stainless Steel Tubing for Better Flow and Added Power
  • Incorporates High-Flow, 400 Cell Catalytic Converters for Better Flow

Test Results:

  • Added an Astounding +17 HP and +24 Lbs. x Ft. TQ as Verified by Our In-House Dyno
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Factory Mounting Locations:
A direct bolt-on system which requires no cutting or drilling to provide a hassle-free installation.

Formed Collectors:
4-to-1 formed collectors decrease turbulence and increases exhaust velocity. The result is increased horsepower, torque and improved throttle response.

Ball Socket Connections:
Unique ball socket connections are used for an easier installation. The ball socket connections also requires no gaskets, giving you a leak-free seal.

Optimized Tube Lengths:
Tube lengths are optimized for true pulse control technology which improves flow and performance.

Headers and Y-pipe sold as set, not available individually

Race Disclaimer:
This is a Race Only product that is to be used solely for competition, it cannot be used on vehicles that are operated on public streets, roads or highways. Its use is limited to closed-course and open-course racing that is formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, could be in violation of local, state and federal laws. To complete the purchase of this item, aFe POWER competition acknowledgement/liability release form must be filled out and submitted.

All aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.


Vehicle Applications

Year Make Model SubModel Engine Fuel
2004-2008Ford F-150 V8 5.4L Gas
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MSRP: $2,354.63

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