Parts installed perfectly. Engine runs quieter at idle and road speed.

Simple, effective. quieted my injectors a bit, but I like the theory most of all.

This was an easy 15 mins install, dropped right in on my 2001 and made a nice difference. Even the wife mentioned it when she drove it, that it sounded quieter and "less lumpy". Overall good mod. Just make sure you install the adapters all the way into the head. I made the mistake at first of just snugging them and one leaked slightly. I tighten them both up all the way to the head, and no issues.

Product showed up on time. Remember to look at the picture and make sure it's flush when tighten. If you have bigger turbo, injectors, ect. There is no difference on or off.
This review is strictly on this product has nothing to do with riffraff itself, save your money don't be like me and copy everybody else it's not worth it

Installed in 20 minutes and immediately smoothed out the idle. Don't know what other benefits there are but I was really annoyed by the choppy oil before and now it idle smoother than any other 7.3 I've had before.

Haven’t had the time to install it yet, but once I paid for it, it was labeled shipped within the hour. Clay is always helpful. Excellent service and fast shipping.

Haven't had a chance to install yet but appears to be well made.

Bought my 99' F350 from the original owner with 285k miles on the clock. In the last few years the previous owner did all the big repairs such as injectors and HPOP just to name a couple. I'm looking to make this old girl last as long as possible with "reliability upgrades" and maybe gain a little performance. This checks one of a long list of boxes. Great product!

7.3 power stroke with 434K miles it made a lot of difference. well worth the effort and money. Very easy install