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.
178 Reviews Hide Reviews Show Reviews
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Awesome item.
Very high quality and fit very nice. Should have done these a long time ago.
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Great Fit
These are great!
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Awesome product!
Looks guys if your already working under the hood and have a chance buy these! Install them you can't go wrong. The factory plenum are weak and it will bite you in the ass when you bend them tightening the clamps. This is a great product I recommend to anyone!
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Nice fix for the thin OEM plenums
Easy to install with a bit of wood and dead-blow hammer. Fit perfect.
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Quality Product
Nice looking and easy install. I also bought new t bolt clamps and could finally really torque the plenums down without worrying about crushing them.
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Easy to install & perfect fit
Very easy to install and fit like a glove. Had a bent plenum from previous owner and corrected the issue. Highly recommend!
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great parts
this company has supply me with great parts and in a timely fashion the parts are made with performance in mind , and yes i will ordering more parts from them thanks for having great fitting parts.
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Well Made
These were nice looking pieces and fit very well. Not sure if they are needed but wow the stock sheet metal is so thin. No worries of them being crushed now. Glad I added these while doing the turbo work. Nice product.
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Super easy install
I think they are good, no issues with the installation, and they will keep the stock manifolds from folding. One of mine was already bent so this fixed it.
