If you are replacing your plenum boots but keeping the factory plenum, this product is mandatory. The reinforcement insert allows extra clamping load on the boots without crushing the factory plenums. Great product.

These are very easy to install, even on an older intake that might be a bit damaged. You can really crank down on the boots to ensure no leaks.

These installed perfectly but they raise the edge of the intake inlet by about an eighth inch. In my case that required me to trim the same amount from the intake spider that comes from the turbo. These made me confident in being able to cinch the t-clamps down tight, eliminate any leaks. I'd say this is a good product.

I got those mostly for peace of mind when attaching the intake boots. I'd read about the potential to accidentally collapse the intake mounting if tightening the bands too much.

These installed easily, will not really restrict flow and will give me peace of mind when clamping down the boots.

Quality product, these are a must for your truck. Fixes a known issue of the stock tin plenums. Had to tap both sides in to fit because mine plenums were out-of-round

I have used these on both my 96 and 99 and it is a must especially if your upgrading boots and clamps. Gives me comfort that they are there and I can seal up the boots with no worry's.

I would strongly recommend getting these if you have stock plenums as well as upgrading the plenum boots as well. I had to tap these in a bit to get them in but once seated they fit great

I am really happy with these and glad I got them.

Works great, easy install. Good addition to stock plenum.