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.
193 Reviews Hide Reviews Show Reviews
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RDP Plenum Reinforcing Inserts™ 99.5-03
They are exceptional and worth the extra $. I pressed them in with a vice and wood blocks to keep it even on insertion. They went in tight and straightened out the wrinkles in the factory plenum. Awesome! Would use them again if needed.
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Great product
Slid right in perfectly and gives the extra support so you can use quality clamps to limit chances of boost leak.
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RDP Plenum Reinforcing Inserts™ 99.5-03
They were well worth using and were super easy to install.
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RDP Plenum Reinforcing Inserts™ 99.5-03
They are everything they say. Super thin and extremely strong.
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Nice!
Fit my 2000 f350. Put rags in open holes and tap in with rubber mallet.
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Plenum inserts
Trick little pieces, very well made!
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Necessary addition to OEM
The manual warns against over tightening boots and collapsing the plenum, but I think I still had leaks. These inserts are the perfect answer. I drove them into the plenums with a brass hammer. They were a pain getting started, but fit perfectly against the machined shoulder. I have no worries about over tightening the new heavy-duty boots after installing these inserts.
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plenum
these worked great!
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Plenum inserts (and boot kit)
Exact size, works great, inserts allowed tight clamping without damaging plenum. Very happy with purchase.
