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Your cart is empty.More like a kit than a single part, many of our Exhaust Manifolds include gaskets and downpipe hardware for easier installation. Since this part is a direct replacement, the exact fit adds another layer of efficiency and convenience. Features: Heat-shield may be included for protection of engine components where applicable Cast iron or stainless tubular construction protects against warping or cracking Leak-resistant for long-lasting performance A rigorous quality inspection has been undertaken to ensure product standards Direct replacements Replaces original manifolds that are cracked from thermal expansion and contraction Strengthened and redesigned in the vulnerable areas of failure Each Manifold Includes: (1) Exhaust manifold (1) Gaskets (manifold to cylinder head) (2) Studs (manifold to exhaust pipe flange) (2) Nuts (manifold to exhaust pipe flange) Interchange P/N: F81Z9431AA, F81Z 9431 AA, F81Z9430AA, F81Z 9430 AA
Kristina Boyd
July 29, 2025
Perfect fit for 2003 F-250 7.3. Good bit of work to get them installed but everything went together fine to replace the worn-out manifolds. I would definitely recommend them to friends.
Cody W.
July 27, 2025
bolt up nicely i was a little skeptical about the gaskets but they sealed up good if you have an older truck and are looking to install an egt gauge just do your self a big favor and buy these drill and tap these then install on truck . one side note while you have the manifolds off good time to do the up pipes.
hunter
July 17, 2025
Nice looking product fits good but Amazon driver threw my package out and ripped my gaskets so beware must be to heavy for most so they just kick out the back of these van
Dewayne(Crash)Whitner
April 18, 2025
i have not mounted these parts yet but i did notice that these will have to be ground out for max. flow
Skip
April 12, 2025
Installed without many issues. Just the typical tedious work that comes with a 20 year old truck.Ther product itself seems fine. Matched the quality of OEM as far as far as I can see. I had a question or two and users here were great to answer. If you need manifolds, I would recommend these.
Lisa Becker Taylor
March 20, 2025
It took us weeks to get the truck in the shop being they were so busy so we lost our window to return..The one side did not line up even with many efforts by the garage. Had to purchase another one to get the truck completed. Do not recommend, go through the dealer, maybe more money for the parts but they will fit and be less complicated.
Steven Ray
March 2, 2025
A better fit than I expected. They are great. If you do not have experience with working on exhaust or lots of experience, then get help from someone who does. A lot of disassembly to install these.
The Wise One
December 5, 2024
Did what it was supposed to do. No issues
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