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Riffraff Diesel Performance Inc, Engines - Supplies, Equipment & Parts, Eagle Point, OR


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RDP Plenum Reinforcing Inserts™

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Your Price:
$35.86 (You save $3.72)
Part Number:

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.


Fitment Details

1999.5-2003 Super Duty, and Excursion Powerstrokes
Will Not fit Early 99
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Product Reviews

Showing reviews 1-10 of 107 | Next

  1. Excellent product 5 Star Review

    Posted by on Jul 8th 2018

    I had a intercooler boot blow off about a month ago so I decided to do the whole deal. Ordered a new set of boots, t-bolt clamps and these billet inserts all from RiffRaff. The inserts are excellent quality and with a small piece of 2x4 and a mallet they tapped right into place fixing my old plenums. Well worth the price.

  2. Quality 5 Star Review

    Posted by on Jul 3rd 2018

    Thumbs up

  3. Great product 5 Star Review

    Posted by on Jun 27th 2018

    I had taken the plenums off to clean and reseal. These were added to make the plenums bullet proof. Nice tight fit and all the reinforcement it needs. New boots and T clamps. Riff Raff has become my one stop shop. I can’t believe how fast stuff ships from here

  4. Added Improvement 5 Star Review

    Posted by on Jun 12th 2018

    I was able to crank these down. These added much more strength to the stock plenums.

  5. RiffRaff Plenum 5 Star Review

    Posted by on Jun 11th 2018

    Awesome product!!..allowed me to crank down the clamps a little more without worrying about crushing plenum sleeve.

  6. A must have when replacing the boots 5 Star Review

    Posted by on May 27th 2018

    A great American made product. These are a definite must when replacing the plenum boots. They allow you to really tighten down on the clamps with destroying your plenums. Great Product.

  7. Boost Leak fixer!!! 5 Star Review

    Posted by on May 10th 2018

    I was having problems with my boots lifting off the plenums, I would try better clamps, I tried tightening them more and ended up collapsing my plenums. I went to clay and grabbed this inserts. Super easy to install, maybe 20 minutes tops to have the truck going again! Now I can use my T-Bolt clamps that I bought with them and I haven’t had a boost leak since! Amazing products as always!

  8. Awesome product 5 Star Review

    Posted by on May 7th 2018

    Awesome idea. Product installs easy and solves boost leaks. Don't need to worry about over tightening clamps.

  9. Fit perfect 5 Star Review

    Posted by on Apr 6th 2018

    Easy to install and fit perfect! Great peace-of-mind knowing you can clamp down without collapsing the plenums.

  10. RDP Plenum Reinforcing Inserts 5 Star Review

    Posted by on Mar 4th 2018

    Hands down one of the best things you can install in your 7.3. The ability to clamp down and not have any leaks is well worth the money! Great quality and perfect fit and finish.

Showing reviews 1-10 of 107 | Next