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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Quality and Perfect Fit
The inserts are tapered to make installation incredibly easy. No fighting with them or beating them with a hammer, they slid right in by hand.
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WOW, I Glad I Ordered These!
Easy to install, and well worth the purchase. Quality product, and NOT large enough to cause a restriction! My plenums were creased, and I didn't even know it til I took the boots off! Pounded these in with a block of wood and fixed the problem. Now I have no worries about over-tightening the hose-clamps. Luv Riffraff Products!
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Simply brilliant part!
A great way to reinforce the light weight sheet metal plenums. Now no worries about smashing them with over tightening the hose clamps. Best part I've seen in a long time!
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Definitely Recommend !!!!
Cheap upgrade and easy to install. Once you pull off your boots, you will be able to tell why you need the inserts. The plenums roll under light clamp pressure.
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Replacing lower boots? You need this!
Great product and a must if you are replacing your lower manifold boots!
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Something to be said for added protection!
Wasn't sure if I needed these, but glad I decided to buy them. After installing the new boots I could see where the added support for the plenums would be a good idea.
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Amazing piece
I have a 2000 7.3 and was doing all new intake and boots, this little plenum ring fit excellently and is 100%worth the money. You can really get a good clamping surface with this paired with the Riff Raff intake plenum boots. VERY HIGH QUALITY. Would buy if again if i ever got another 7.3
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A must have addition for the 7.3
Before I got these I kept having leaks at the intake plenum. No matter what boots I would use the hose clamps would always come loose, and I would get leaks out of the intake plenum boots. I couldn't use t-bolts because I would collapse the intake plenum. Once I added these inserts I was able to get rid of the cheap hose clamps and use the T-bolt clamps. I've had these on my truck going on 2yrs and haven't had to worry about any of my past problems. Another great product sold by Riffraff.
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One more quality part from Riffraff Diesel.
Excellent fit,you can really tighten down the clamps.
