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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 95 | Next

  1. Awesome product! 5 Star Review

    Posted by on Nov 24th 2017

    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!

  2. Nice fix for the thin OEM plenums 5 Star Review

    Posted by on Nov 16th 2017

    Easy to install with a bit of wood and dead-blow hammer. Fit perfect.

  3. Quality Product 5 Star Review

    Posted by on Nov 1st 2017

    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.

  4. Easy to install & perfect fit 5 Star Review

    Posted by on Oct 2nd 2017

    Very easy to install and fit like a glove. Had a bent plenum from previous owner and corrected the issue. Highly recommend!

  5. great parts 5 Star Review

    Posted by on Sep 5th 2017

    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.

  6. Well Made 5 Star Review

    Posted by on Aug 27th 2017

    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.

  7. Super easy install 5 Star Review

    Posted by on Jun 16th 2017

    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.

  8. Well made product 4 Star Review

    Posted by on Jun 15th 2017

    Installed these and now I see how thin the manifold metal is. Only issue I had was getting the Y-pipe thing connected to the turbo. Since the rings effectively raise the top of that manifold some I couldn't get the Y pipe attached to the front of the turbo. And on mine the Y thing didn't perfectly line up with the manifolds either. Probably something I screwed up. I just used a grinder and made a little room and everything installed perfectly.

  9. These are great 5 Star Review

    Posted by on May 29th 2017

    WOW, all other reviews are right on the money, these are amazing fit and finish are exceptional, I had the plenums off so I used my shop press and wood to press them in, perfect interference fit, however, I did put red loctite around the top lip before driving them home, RPD did this right.

  10. Mandatory. 5 Star Review

    Posted by on May 22nd 2017

    Crushed a plenum. Put these on. They will save you headaches later and a bunch of time pulling off the old ones and more money from replacing broken parts. Precision fit. Great part.

Showing reviews 1-10 of 95 | Next