Stainless Works Long Tube Header Kit w/ High-Flow Cats (08F150HCAT) - 2004–2008 Ford F-150 5.4L
Unleash more power, improved throttle response, and a deeper exhaust tone from your 2004–2008 Ford F-150 5.4L with the Stainless Works Long Tube Header Kit. Designed to eliminate restrictive factory exhaust components, this system delivers increased airflow and performance you can feel across the RPM range.
These long tube headers feature CNC mandrel-bent 1-3/4-inch primary tubes welded to heavy-duty 3/8-inch thick flanges for a precise seal and long-term durability. The primaries merge into slip-fit collectors with integrated merge spikes to improve exhaust scavenging before flowing into high-flow catalytic converters. Multiple connection options are available, allowing you to retain a factory-style exhaust layout or upgrade to a true dual performance setup.
Constructed from corrosion-resistant 304 stainless steel and fully TIG welded at Stainless Works’ state-of-the-art facility in Streetsboro, Ohio, this header system is built to handle heat, mileage, and hard use. Backed by a lifetime warranty and proudly made in the USA, it’s a proven upgrade for performance-focused F-150 builds.
Features
- Long tube header system for 2004–2008 Ford F-150 5.4L
- Choice of factory connection or true dual performance connection
- 1-3/4-inch CNC mandrel-bent primary tubes
- Heavy-duty 3/8-inch thick header flanges
- Slip-fit collectors with integrated merge spikes
- Integrated high-flow catalytic converters
- Smooth mandrel-bent tubing for optimized exhaust flow
- Constructed from corrosion-resistant 304 stainless steel
- Fully TIG welded for strength, durability, and appearance
- Made in the USA with a lifetime warranty
Fitment
- 2004 Ford F-150 5.4L (SuperCrew, 5.5' Bed)
- 2004 Ford F-150 5.4L (SuperCrew, 6.5' Bed)
- 2004 Ford F-150 5.4L (SuperCab, 6.5' Bed)
- 2005 Ford F-150 5.4L (SuperCrew, 5.5' Bed)
- 2005 Ford F-150 5.4L (SuperCrew, 6.5' Bed)
- 2005 Ford F-150 5.4L (SuperCab, 6.5' Bed)
- 2006 Ford F-150 5.4L (SuperCrew, 5.5' Bed)
- 2006 Ford F-150 5.4L (SuperCrew, 6.5' Bed)
- 2006 Ford F-150 5.4L (SuperCab, 6.5' Bed)
- 2007 Ford F-150 5.4L (SuperCrew, 5.5' Bed)
- 2007 Ford F-150 5.4L (SuperCrew, 6.5' Bed)
- 2007 Ford F-150 5.4L (SuperCab, 6.5' Bed)
- 2008 Ford F-150 5.4L (SuperCrew, 5.5' Bed)
- 2008 Ford F-150 5.4L (SuperCrew, 6.5' Bed)
- 2008 Ford F-150 5.4L (SuperCab, 6.5' Bed)
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