K2 Industries
04-08 Ford F-150 5.4L V8 Stainless Steel Headers
04-08 Ford F-150 5.4L V8 Stainless Steel Headers
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04-08 Ford F-150 5.4L V8 Stainless Steel Headers
Stainless steel headers built to flow exhaust gases efficiently and resist rust from underhood heat and moisture. These are constructed from mandrel-bent tubing that maintains consistent diameter throughout each runner, reducing turbulence and backpressure. Stainless material handles thermal cycling without warping or corroding.
Key Features
- Mandrel-bent runners - Smooth bends preserve flow and reduce turbulence compared to crushed or kinked tubing.
- Stainless steel composition - Resists corrosion from heat cycles and moisture, outlasting mild steel alternatives.
- Factory-style mounting - Designed to integrate with existing engine bay points without modification.
Specs
- Material: Stainless Steel
- Construction: Mandrel-bent tubing
- Application: 04-08 Ford F-150 5.4L V8
Whats Included
- Header assembly
Frequently Asked Questions
Will these bolt straight to my existing exhaust system?
These mount at factory attachment points. You'll need to confirm your current downpipe or cat-back configuration fits the header outlet before final assembly — outlet diameter and angle should match your existing system.
Do I need to do anything to the headers before installation?
Inspect all mounting points and runner welds before bolting on. If you plan to wrap the tubes, do that first — it's easier off the engine. No coating, primer, or painting is required on stainless.
What if I have a fitment issue when they arrive?
Test-fit the headers fully before you tighten everything down. Check clearance at heat shields, firewall, and steering components. If there's interference, contact support with photos before proceeding — some fitment tweaks may require minor bracket adjustment.

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