Riffraff Diesel Billet Intake Manifold Plenums 1994-2003

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Riffraff Diesel Billet Intake Manifold Plenums for Ford 7.3L 1994-2003

Our Gen 3 billet aluminum intake manifold plenums are 100% made in the USA from USA materials.

An engineered design that addresses several issues at once: 
- Pair of 6061 Billet Aluminum Plenums - 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: Anodized Color on Aluminum can be discolored / damaged by chemical engine cleaners. Use only soap and water to clean.

1994-2003 7.3L Powerstroke
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  • 5
    A work of art

    Posted by Dean on Mar 5th 2023

    I got the 2 inch plenums because I have an OBS 1997 Powerstroke. These things really are a work of art. They are very sturdy and well made, it gives me confidence knowing that these won't lift or leak when I throw boost to my engine. Thank you Clay for making the 2 inch ones for the OBS trucks, I am very happy with these.

  • 5
    Very high end machining job.

    Posted by Geoff Maisey on Feb 26th 2023

    Thank you Riffraff Kind regards from Australia.

  • 5
    Killer Product

    Posted by Gary Perkins on Jan 5th 2023

    The design and machining is quite amazing on these plenums. From the oring, to the stainless hardware, to the professional box that it comes in. 5 stars!

  • 5
    Billet plenum

    Posted by Boomjet on Dec 19th 2022

    High Quality milling. Pay attention to the bolt lengths.... beatiful, Functional, durable.
    Supa fast shipping. Thank you riff raff

  • 5
    Billet Intakes

    Posted by Dan on Sep 5th 2022

    I happen to be a machinist with 43 years in the trade. I have to say....These. Are. Beautiful.

    The step over on some of the surfaces only add to the beauty.

    I think the oring groove could use a few pinch points to hold the oring while installing...minor thing though.

  • 5
    Looks good, fits good

    Posted by Shawn Halstead on Aug 2nd 2022

    Definitely buying these for my other 7.3's. They fit perfect and I love the way they look. It's a shame they're under so many lines and wiring.

  • 5
    Billet Plenums

    Posted by Adam on Feb 17th 2022

    These are a piece of art and I wish they were not buried in the valley. Extremely well made, no defects. Took me some tries to get the rubber ring on, but once on, extremely resistant. Installed same time as a T4 S363 kit and new single shots. 2000 Excursion. Runs extremely strong with 300k on it.

  • 5
    Flawless finish highest quality

    Posted by Scott on Feb 10th 2022

    Attention to detail

  • 5
    Perfect fit and finish

    Posted by Curt on Feb 7th 2022

    Great Product! A must for any build or replacement of the cheap factory tin plenums. Thanks Riff Raff for another great product!