Riffraff Diesel Billet Intake Manifold Plenum Set for Ford 7.3L 1994-2003
Our Gen 3 billet aluminum plenums are 100% made in the USA from USA materials.
An engineered design that addresses several issues at once:
- Pair of 6061 Billet Aluminum Plenum - No more sheet metal to bend
- Made In the USA!
- Fits all popular 1994-2003 stock pedestal mount and T4 turbos
- Anodized for a long lasting finish
- Larger intake mouth to accommodate flow
- Fits under both stock and modified turbos 1994-2003
- Commonized to work with all 8 and 10 bolt cylinder heads
- Stainless Steel mounting hardware for seamless install
- Viton O-ring seal rather than RTV - Tested at over 150psi
- Works with both dual and single HPOP's
- Billet spacers for GPR and GPCM brackets
- Plenum mouth O.D. is machined to retain intake "Y" better for T4 style kits
If you are looking for a true billet solution at an economical price, then this is your product.
*Note: Factory 1994 - Early 1999 have 2" plenums, and Late 1999-2003 have 3" Plenums
*Note: Anodized Color on Aluminum can be discolored / damaged by chemical engine cleaners. Use only soap and water to clean.
*Fitment Note: The hardware included with the plenums is intended to secure the plenums and GPR/AIH bracket only; if the fuel line clamp and AIH ground wire will be re-used, customer will need to make provision for the reinstallation of those items. We suggest the RDP-FFL line kit in place of the stock fuel lines.
109 Reviews Hide Reviews Show Reviews
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Easy install
Plenums came well packaged and included everything for install. Massive improvement over the stock, weak plenums. Stainless screws are a nice touch.
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O ring design
The groove cut out for the o ring matched with the supplied o ring is terrible. The groove is very shallow and the o ring is very thin. You have to have a lot of patience to get the o ring installed and if you are lucky it wont fall out with the slightest movement. Other manufacturers have designed more of a press fit for their o ringed parts which gives reassurance where as this gives made in china vibes. Otherwise the anodizing seems okay, not great but okay. The plenum covers two of the bolt holes as it was not milled for them. Probably not needed. Good luck to future buyers. I would recommend ordering extra o rings if you purchase these plenums as the shipping is close to the price of the o rings.
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High Quality Parts
These are impressive both in their fit and their function. The stainless hardware is a very nice touch, as well as the oring seal. Overall not a hard install, just a little pain to remove all the factory silicone RTV from the head.
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Good product
Install can be a pain but thats due to fords setup, you need to remove the turbo to get it installed. I tried to avoid that but ended up having to remove it. The only complaint I have is if the instructions state that the turbo needs to be removed why not throw in replacement O rings?
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Manifold plenums
Very high quality and replacement for another product that didn’t seal to the intake properly.
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Great part but the seals are a pain
The seal is not easy to get to stay in the groove and will easily pop out if stretched too much or rolled into the groove. I ended up using a small amount of gasket tac in the groove to keep the seal in position while installing.
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Must Have For Anyone Producing Over 23 PSI
These billet intake manifolds are a work of art. Exceptional quality, function and looks. My stock plenums RTV gaskets blew out due to my truck producing 27~32 PSI. These billet plenums w/ the o-ring style gasket fix and surpassed my issue. Highly recommend these to anyone boosting over 23 PSI.
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Excellent Design
These are by far the nicest addition to my 2002 7.3 I have done. Stainless hardware, and the machining is perfect. Easy install once you get your stock plenums off and clean all that nasty rtv off the heads.
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These are awesome!
My flat plate style plenums started leaking. Replaced them with these. The gain in performance is amazing. They are well worth the money to buy them.
