Stainless Works 04-08 Ford F-150 4.6L 4WD 1-5/8in Long Tube Headers w/ Catted Leads (Factory Conn.) (part # FT05CAT), built from 304 stainless steel by Stainless Works in Streetsboro, Ohio.
304 Stainless Steel
TIG Welded
2004–08 F-150 4.6L
Long Tube Headers
Factory Connect
Made in USA
Overview
Improve the power and performance of your 2004–08 Ford F-150 4.6L 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 1-5/8" 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. This system is designed to connect to the factory exhaust.
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 4.6L
- Factory Connection design for easy installation
Key Features
1-5/8" 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 Connection Point
Direct bolt-on to your factory exhaust system.
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 4.6L |
| System Type |
Long Tube Header Kit — Factory Connect |
| Primary Tube Size |
1-5/8" |
| Collector Size |
Slip-Fit with Integrated Merge Spike |
| Flange Thickness |
3/8" |
| Catalytic Converters |
EPA Compliant High-Flow |
| Connection |
Factory Connection Point — Y-Pipe |
| Material |
304 Stainless Steel |
| Welding |
TIG Welded |
| Warranty |
Lifetime |
| Origin |
Made in USA — Streetsboro, Ohio |
See It In Action
Sound Comparison and Features — 2004–08 F-150 4.6L Long Tube Header System
What's In The Box
- Driver & Passenger Side Headers
- Driver Side Lead Pipe
- High-Flow Catalytic Converters
- Y-Pipe
- AccuSeal Clamps x5
- O2 Extensions x3
- Bolt Kit — 16 Pieces
- RTV Tube
Frequently Asked Questions
Will these headers fit my 2004–08 F-150 4.6L?
Yes. These long tube headers are designed specifically for the 2004–2008 Ford F-150 with the 4.6L engine. They are a direct bolt-on kit designed to connect to the factory exhaust with no cutting or modification required.
What are the benefits of upgrading to these headers?
These headers feature 1-5/8" primary tubes with 3/8" thick flanges and slip-fit collectors with integrated merge spikes. They significantly improve exhaust flow for increased horsepower and torque, while delivering a more aggressive exhaust tone.
Do these headers include catalytic converters?
Yes. This system includes high-flow catalytic converters that are EPA compliant and designed for improved flow while maintaining emissions compliance. The system also includes leads and a Y-pipe for factory connection.
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: FT05CAT
- Product type: Headers
- Fitment: 04-08 Ford F-150 4.6L 4WD
- Configuration: High-Flow Cats
- EPA status: Testing
- Shipping weight: 55 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.
