Flashark Ford 5.4L V8 Exhaust Header – Fits F-150/F-250 1999–2004, O2/EGR Compatible
Replacing or upgrading your exhaust header is necessary for both engine performance and sound. Whether on or off the track, exhaust headers provide more horsepower and improved exhaust sound. FLASHARK offers many products to help you create your own custom engine headers. It's really easy and convenient to use: direct bolt-on, no modification needed.
Specifications:
Brand Name: Flashark
Certificate: ISO9001:2000
Application: Automobile Exhaust Header
Material: 201 Stainless Steel
Surface: Mirror Polish
Model: EH28139
Details
Design for High Air Flow
Inlet Ports Size: 1.575"
Outlet Ports Size: 2.405"
Total length: 14.2"
Manifold Pipings: 8 X 1.625"
Exhaust Pipes: 2 X 2.405"
Made of High-Quality T304 Stainless Steel Material
8-2-1 Racing Spec. Design for High Air Flow Rate
TIG Welded CNC Machine Flange
Increase High Flow Air, Instantly Gain at least 10 -15 Hp. / Tq.
O2 Sensor Insertion Bungs, EGR Bungs and Metal Gasket Include
Includes: 1 X Set of Header Exhaust System; Hardware, such as Gasket(s) and Bolt(s)
Exhaust Header VS Manifold, which is the better choice?
The structural differences between exhaust headers and manifolds are the material and size. From the material, exhaust headers are made of lighter, thinner steel, while exhaust manifolds are made of thick iron. Exhaust headers are also longer than exhaust manifolds. When in use, exhaust manifolds create back pressure, which lowers performance. Because each cylinder of the engine is given its own tube, however, headers eliminate this problem; thus, allowing the gases to exit without the creation of back pressure. Therefore, exhaust headers are a BETTER choice than an exhaust manifold.
Fitment & Compatibility
- Exclusively fits Ford F-Series models factory-equipped with 5.4L V8 engines ONLY, covers all listed trims within the specified year ranges.
| Brand | Model | Year Range | Full Compatible Specs |
|---|---|---|---|
| Ford | F-150 | 1999-2003 | All Trims (Base/King Ranch/Lariat/Lightning/XL/XLT), 5.4L V8 Engine |
| Ford | F-150 Heritage | 2004 | All Trims (SVT Lightning/XL/XLT), 5.4L V8 Engine |
| Ford | F-250 | 1997-1999 | All Trims (Base/Lariat/XL/XLT), 5.4L V8 Engine |
Frequently Asked Questions: Flashark 1999-2004 Ford 5.4L Headers
Q1: Will these fit my 2001, 2002, or 2003 F150 5.4 headers replacement project?
A1: Absolutely. These are purpose-built 5.4 2v headers designed as a direct fit for the 1999-2003 Ford F-150, the 2004 F-150 Heritage, and the 1997-1999 F-250. If you are searching for exact 2001 ford f150 5.4 headers, 2002 f150 5.4 headers, or 2003 f150 5.4 headers, this kit is the perfect solution for your truck.
Q2: I see searches for "long tube headers 5.4 triton". Are these long tubes or shorty headers?
A2: These are shorty-style headers. While long tube headers for 5.4 triton offer great top-end power, they require extensive custom exhaust fabrication and moving your catalytic converters. Our shorty 5.4 headers provide a much easier, direct bolt-on installation that mates perfectly to your factory Y-pipe, offering an instant 10-15 HP gain without the headache of custom exhaust work.
Q3: Can I use this kit for a 2004 ford f250 5.4 exhaust manifold replacement?
A3: This specific kit is designed for 1997-1999 F-250 models and 1999-2004 (Heritage) F-150s. For a standard 2004+ F250, fitment may vary. However, if you are looking for a 2004 f150 exhaust manifold replacement (specifically the Heritage edition), this is exactly what you need to fix that annoying ticking leak.
Q4: Will these fit the newer 5.4 3V engines, like the 2005 or 2006 ford f150 5.4 headers?
A4: No. These are specifically designed for the 2-Valve (2V) Triton engines. They will NOT fit the 3-Valve engines found in 2004-2008 models. If you are searching for 5.4 3v headers or 5.4 3v long tube headers, you will need a different product designed specifically for the newer 11th Gen F-150 platform.
Q5: Are these a good fix for the common Ford F150 exhaust ticking noise?
A5: Yes! The factory cast-iron exhaust manifolds on the 5.4L Triton are notorious for warping, cracking, and snapping studs, causing a loud ticking noise. Upgrading to these T304 stainless steel aftermarket headers permanently solves this design flaw while significantly improving exhaust flow and durability.
Q6: If I install these, how does it affect fuel economy?
A6: Great question! By replacing the restrictive factory manifolds with our high-flow 8-2-1 tubular design, your engine doesn't have to work as hard to push exhaust gases out. Many Flashark F150 customers report a slight improvement in fuel economy (MPG) during highway cruising, provided you keep your foot out of the throttle!
Q7: Do I need to buy gaskets or hardware separately for my 99 f150 exhaust?
A7: No, everything you need is in the box. Whether you are upgrading a 1999 f150 exhaust or doing a complete 2000 ford f150 5.4 exhaust system overhaul, this kit includes premium metal gaskets, bolts, and studs for a secure, leak-free installation.
Q8: Will these Flashark headers throw a Check Engine Light (CEL)?
A8: No. Our ford f150/f250 5.4l triton v8 headers come pre-welded with precise O2 sensor bungs and EGR tube fittings. As long as your existing sensors are functioning properly, this is a true plug-and-play upgrade that keeps your ECU happy.
Q9: I have a 4.6L V8. Will these fit, or do I need 2001 f150 4.6 long tube headers?
A9: While designed as ford 5.4 headers, some of our enthusiast customers have successfully installed these on 4.6L V8 engines. However, doing so requires clearance modifications, such as installing an aftermarket starter. We recommend them strictly for the 5.4L to guarantee a 100% bolt-on experience.
Q10: How will this change the sound of my 2001 ford f150 5.4 exhaust system?
A10: Installing these Flashark headers will wake up your Triton V8. You can expect a deeper, more aggressive idle and a throaty rumble under acceleration. It pairs exceptionally well with aftermarket catback systems to give your truck that classic American V8 muscle sound.