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 better flow than stock
- 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 aluminum 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. Due to variations in fuel systems, aftermarket HPOP, and turbos we can not guarantee fit with all options on the market. Some early OBS trucks stock fuel line adapters can interfere with the plenums. We suggest the RDP-FFL line kit in place of the stock fuel lines for the 1999-2003 models.
124 Reviews Hide Reviews Show Reviews
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Billet Plenum Kit
This is a much needed upgrade over the stock intake plenum. Overall straight forward install, just follow the provided instructions. Make sure the head surface is clean, and if you are in a cold climate like me stretch the oring before install and they will drop right in. Stainless hardware is a very nice touch as well.
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OBS fittment
Nice finish, O ring is a pain to install on plenum, dosnt like to stay put. Would work better if it was form fitted. The biggest problem is on the passenger side head. It is not beveled for the fuel line fitting to attach to fuel line return to bowl, and the bottom bolt that is slotted dosnt come out far enough to get plenum in without rolling little o ring gasket. Had to dremel spot for fuel fitting and cut down spot for bottom bolt to fit without rolling gasket.
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Billet Intake Plenums
Great upgrade over my stock plenums. The machining and design on these are unmatched. Oring seal is a great design over the ford rtv. Instrcutions are well written and took all the guess work out of install.
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Billet Intake Plentum
Great product from the best company out there for upgrading and maintaining your Powerstroke
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Billet Plenum
I was a little worried by a couple previous comments on the oring install, but honestly it isnt hard at all. If you have any experience at all and follow the directions install is straight forward. Recommend these 10/10, and Riffraff was very helpful with any questions.
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Billet Plenum Kit
Excellent upgrade over the cheap stock ones. So nice to get away from the rtv and move to a real oring seal. The green is the perfect accent to my engine bay.
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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.
