I have not installed yet. I've been losing some oil on my 7.3. A set of o rings is a cheap way to see if that's where it is going. Plus won't hurt anything to try. Riffraff has the best prices on these. You also know they only sell the best here. So no question on wether Alliant is good brand or not. Even if it doesn't help my oil loss, I know my rings are good till the injectors need a rebuild.

Factory part. Cheapest place around to buy them.

Perfect fit and an excellent upgrade from the OEM rings that were all blown out.
Super quick shipping and support.

Great company, great product, great price. Fits perfect. Fixed problem. After long day of work came home to my riffraff box, product wrapped pretty good in bubble wrap. Had a few extra goodies which was pretty cool, I'm not a sticker guy, but I do feel they deserve to be on my truck. Will actually put it on my truck because their company is amazing! God Bless RiffRaff! Thank You!

No complaints.
Quality o rings fit perfectly

Fast shipping, excellent quality.

Fast shipping and top shelf product

My truck was burning a lot of oil and running just horrible. Popped all the injectors and found out that most of the orings needed to be repolaced and then i order these. Its been two weeks and the truck runs like it just drove off the showroom.

Great OEM quality O rings, I was shocked at how much these helped my truck. Starts much easier now, no white smoke at start up and more power as it holds the oil pressure up. Much needed as I have 190,000 miles. Used the Riff Raff instruction sheet in the resources tab. Worked great! Thanks for all the help Riff Raff!!