RDP Plenum Reinforcing Inserts™ 99.5-03

Part Number:
RDPPRI

Manufacturer:

$42.58
$38.86
(You save $3.72 )
(180 reviews) Write a Review
RDP Plenum Reinforcing Inserts™ 99.5-03

RDP Plenum Reinforcing Inserts™ - Ford 7.3L 99.5-03

These billet 7075 Aluminum plenum inserts are a Riffraff Diesel original design and are patent pending. They are made to allow you to clamp down as hard as needed with T-bolt clamps so that you don't have any boost leaks. Fix your bent and crushed stock plenums with our Inserts as well. This is a budget friendly option to buying full billet plenums. Easy install, no special tools needed.

These were designed so as to add the least restriction possible while providing more than adequate structure for clamping. The Plenum Inserts have been machined to within .164" of the OEM diameter so there will not be any measurable affect on EGT's or cfm flow.

These are sold in a pair.

Riffraff Diesel Performance is committed to 100% Made in the USA on this product. All materials are from USA resources. Every machining step is performed in the USA. Every component is assembled in the USA.

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1999.5-2003 Super Duty, and Excursion Powerstrokes Will Not fit Early 99
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  • 5
    Inserts

    Posted by Jim Chrisawn on Nov 2nd 2022

    Precision fit and finish where it is really needed. Excellent

  • 5
    RDP PLENUM REINFORCING INSERTS™ 99.5-03

    Posted by SCOTT ROBBINS on Sep 28th 2022

    Great to prevent deforming the weak factory plenums!

  • 5
    Plenum inserts

    Posted by Neil Watson on Sep 22nd 2022

    GREAT quality. Fit like a glove. Allows for strong clamp pressure.

  • 5
    Plenum rings

    Posted by William James on Sep 20th 2022

    Very happy with the purchase. Thanks Riff Raff.

  • 5
    RDP PLENUM REINFORCING INSERTS™ 99.5-03

    Posted by MikeFromMT on Jul 9th 2022

    These slip right inside the factory plenum so that you can get a tighter clamping force on the plenum boots, very easy to install and they give much more strength to the very soft factory plenums.

  • 5
    Plenum reinforcement inserts

    Posted by Joshua Pinkley on May 31st 2022

    Worked as advertised. Easy install with 2x4. Good fitment. My boost lbs went down just slightly but I'm not sure why. Did a couple other upgrades at the same time. Might have a slight leak in garage line.

  • 5
    Well worth the money

    Posted by Grant on May 23rd 2022

    Well worth the money easy to install Manufactured very nicely would suggest to anybody who plenums are diss formed or using as preventative maintenance

  • 5
    Inserts

    Posted by Rodney S on Apr 25th 2022

    Great product. Yes, they are a tight fit that require some light encouragement to go in all the way, thanks for pointing that out Clay. Wouldn’t use stock plenums without these. Thanks again Clay for another great product and all the help!

  • 5
    Item worked like it should.

    Posted by Will A on Jan 11th 2022

    A little tight getting in just need taped in with rubber mallet.. better clamping force for boots