Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats Y-Pipe (part # 08F150HCATY), built from 304 stainless steel by Stainless Works in Streetsboro, Ohio.
304 Stainless Steel
TIG Welded
2004–08 F-150 5.4L
Long Tube Headers
Factory Connect
Made in USA
Overview
Improve the power and performance of your 2004–08 Ford F-150 5.4L with premium long tube headers from Stainless Works. All tubes are CNC mandrel bent for optimal flow and made from 304 stainless steel for maximum corrosion resistance.
Starting with 3/8" thick flanges welded to 1-3/4" primaries, these headers flow into slip-fit collectors with an integrated merge spike. Finally they finish into high-flow catalytic converters for maximum performance and emissions compliance.
Built from corrosion-resistant 304 stainless steel and fully TIG welded for strength and durability at our state-of-the-art facility in Streetsboro, Ohio — engineered for long-term performance.
Why Stainless Works
- American-made from raw material to finished product
- TIG welded by skilled craftsmen for strength and beauty
- Lifetime warranty on material and craftsmanship
- Direct bolt-on fit for 2004–08 F-150 5.4L — SuperCab & SuperCrew
- Available with Factory Connection or True Dual Performance Connect
Key Features
1-3/4" Primary Tubes
Optimized sizing for strong low-end torque and mid-range power.
Slip-Fit Collectors
Integrated merge spikes improve exhaust scavenging and performance.
High-Flow Catalytic Converters
EPA compliance with improved flow for maximum performance.
Factory or True Dual Performance Connect
Choose the connection option that matches your build.
Mandrel Bent Tubing
Smooth airflow with zero restriction bends.
TIG Welded Construction
Precision welds for maximum durability.
Specifications
| Vehicle Fitment |
2004–08 Ford F-150 5.4L — SuperCab & SuperCrew |
| System Type |
Long Tube Header Kit |
| Primary Tube Size |
1-3/4" |
| Collector Size |
Slip-Fit with Integrated Merge Spike |
| Flange Thickness |
3/8" |
| Catalytic Converters |
EPA Compliant High-Flow |
| Connection Options |
Factory Connection — or — True Dual Performance Connect |
| Bed Compatibility |
SuperCrew: 5-1/2' or 6-1/2' Bed
SuperCab: 6-1/2' Bed |
| Material |
304 Stainless Steel |
| Welding |
TIG Welded |
| Warranty |
Lifetime |
| Origin |
Made in USA — Streetsboro, Ohio |
Fitment Information
This header system is designed for the 2004–2008 Ford F-150 5.4L in the following configurations:
SuperCrew
✓ 5-1/2' Bed
✓ 6-1/2' Bed
SuperCab
✓ 6-1/2' Bed
⇩ Download Installation Instructions (PDF)
See It In Action
Sound Comparison and Features — 2004–08 F-150 5.4L Long Tube Header System
What's In The Box
- Driver & Passenger Side Headers
- Catalytic Converters x2
- Lead Pipes x2
- X-Pipe or Y-Pipe
- 2.5" SS AccuSeal Clamps x4
- 3" SS AccuSeal Clamps x2
- O2 Extensions x4
- Bolt Kit — 16 Pieces
- RTV Tube
- Installation Instructions
Frequently Asked Questions
Will these headers fit my 2004–08 F-150 5.4L?
Yes. These long tube headers are designed specifically for the 2004–2008 Ford F-150 with the 5.4L engine. They fit SuperCab and SuperCrew configurations with the specified bed lengths. They are a direct bolt-on kit with no cutting or modification required.
What connection options are available?
You can choose between Factory Connection for a direct bolt-on to your stock exhaust, or True Dual Performance Connect for maximum flow and performance with a Stainless Works catback system. Both options include high-flow catalytic converters.
What bed configurations are supported?
This header system fits SuperCrew trucks with 5-1/2' or 6-1/2' beds, and SuperCab trucks with 6-1/2' beds. Multiple connection options are available to help you get the setup you need.
What warranty is included?
Stainless Works provides a lifetime warranty on material and craftsmanship — covering the full life of the product, not just a limited term.
Questions? Call us at | Mon–Fri 7:30am–4:30pm EST
Built To Order in 4 Weeks — Free Shipping on Orders $50+
This Listing
- Brand: Stainless Works
- Part number: 08F150HCATY
- Product type: Headers
- Fitment: 2004-08 F150 5.4L
- Configuration: High-Flow Cats, Stock Exhaust (Factory Connect)
- EPA status: Testing
- Shipping weight: 58 lb
California Prop 65 warning applies to this product.
Emissions note: headers, downpipes and catless/high-flow pipes may not be legal for street use in all states. Check your local emissions laws before installing.
Fitment note: Stainless Works systems are application-specific (year, cab/bed, transmission and factory exhaust). Send us your VIN before ordering and we will confirm fitment: 954-507-6261 or sales@americanmuscleperformance.net.
