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.
195 Reviews Hide Reviews Show Reviews
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Slipped right in
very nice product truck runs even better
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Thanks!
Look good and perform better! No more worrying about fighting the plenum clamps down to much! Once again, thanks Clay! Riffraff is the best!
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Essential Upgrade
Did not appreciate importance until CAC boot kit arrived and began to dissemble. Immediately stopped, ordered RPI's and clamps. Quality products and highly recommend both!
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Excellent
Very easy to install and are excellent quality. My intake plenums were in perfect condition so the inserts slipped right in.
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Great Product
Well made and easy to install!! Great instructions for installation.
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Easy Install
These inserts were a breeze to install. I HIGHLY recommend getting these when installing new boots to knock it all out at once. Very easy and definitely a good functional component.






