99-04 Ford F-150 5.4L Exhaust Header Gasket
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*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
99-04 Ford F-150 5.4L Exhaust Header Gasket
Sealed combustion chamber connection between your header and cylinder head. This gasket prevents exhaust leaks at the critical header flange interface. Designed to handle repeated thermal cycling without degradation.
Key Features
- Flange-specific geometry - Matched to OEM header dimensions for zero-gap sealing.
- Thermal stability - Withstands exhaust manifold temperatures without deformation or blowout.
- Drop-in replacement - Installs at factory mounting points without modification.
Specs
- Hard panel construction gasket assembly
- Designed for 5.4L engine configuration
What's Included
- Exhaust header gasket only
Frequently Asked Questions
Do I need hardware to install this?
The gasket itself has no fasteners. You'll be reusing your existing header bolts and studs—just unbolt the header, swap the old gasket for this one, and torque back down to spec per your service manual.
Should I prep or clean the mounting surfaces before installation?
Yes. Scrape away any old gasket material and carbon buildup from both the header flange and cylinder head surface with a gasket scraper or wire brush. A clean, flat surface ensures a proper seal and prevents leaks.
Will this stop an exhaust leak at the header?
If your leak is at the header-to-head interface, this gasket will seal it—provided the header and head surfaces are flat and clean. If the leak is elsewhere (manifold cracks, loose bolts elsewhere in the system), you'll need to address that separately.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.