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AFE 1-5/8 in. Twisted Steel Headers w/ Y-Pipe - Street Series (04-08 5.4L F-150)

AmericanTrucks no longer carries the AFE 1-5/8 in. Twisted Steel Headers w/ Y-Pipe - Street Series (04-08 5.4L F-150). Please check out 2004-2008 F-150 Exhaust Systems for an updated selection.

Features & Details

  • Increases Horsepower, Torque and Throttle Response
  • Long Tube Header Design
  • Twisted Steel Y-Pipe with Headers from AFE
  • Direct Bolt Installation
  • Natural Finish
  • Advanced Optimization of Tube Lengths and Connections
  • 16-Gauge 1-5/8" Stainless Steel Construction
  • Legal in 48 States Due to Catalytic Converter with 400 Cells
  • No Calibration Required for Operation
  • Fits 2004-2008 5.4L F-150s
One Complete Package. Ready to upgrade your exhaust but don't want to spend a long time mixing and matching individual parts? Grab this powerful Y-pipe set that comes complete with headers and catalytic converters to get your overhaul done faster. The split design merges with a mitered seam to create proper mixing of the reunited flows, while the tubing is the maximum 3 in. diameter for the fastest flow speed possible.

Tough for Rough Roads. Flying rocks, road salt, and scouring sands won't leave you with exhaust leaks when you put in this tough Y-pipe set. The tubing is mandrel-formed from 16-gauge 1-5/8" stainless steel. The chromium content prevents corrosion from the usual suspects while the thickness of the metal stops dings and dents in their tracks.

Catalytic Conversion. The stock converters on Ford F-150s are notorious for throttling the power of the engine, especially on the 5.4L model. Unleash your truck's true potential while remaining within the emissions limits set by 48 states with this powerful exhaust upgrade.

Quick Installation. Exhaust improvements always take a few hours, but the ball sockets and snap-on attachment points for this Y-pipe greatly simplify the process. You won't need to drill into your frame or suspension because the attachment points on this part line up with the factory openings. 

No Tune Required. These AFE Steel Headers and Y-Pipe are designed to improve the performance of your 5.4L F-150 without the need of reprogramming your truck's computer. Even though a re-tune is not required for operation, AmericanTrucks recommends a custom tune to reprogram the vehicle's computer (ECU) to get the best possible performance from these headers.

No CARB Certified. These Headers are not CARB certified, therefore they are not legal for use in California or any other state adopting California emission standards. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

Application. These AFE 1-5/8" Street Series Twisted Steel Headers and Y-Pipe works with 2004-2008 5.4L Ford F-150s.

Fitment: Details

CA Residents: WARNING: Cancer and Reproductive Harm -

What's in the Box
  • (2) Twisted Steel Headers
  • (1) Y-Pipe
  • (1) Ball and Socket Flange
Installation Info
Will it fit my F-150?

    Customer Photos

      Questions & Answers (2)

      2 Top Rated Questions

      Will this fit the fx4?4x4

      • Yes, these headers will be compatible with the FX4 4x4 truck.

      Helpful (0)

      Will these fit on a four wheel drive truck?

      • The AFE 1-5/8 in. Twisted Steel Headers w/ Y-Pipe will work with the four-wheeldrive trucks yes. 

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