These are by far the best injector o-rings available for the HEUI injectors in these motors. Don't cheap out and get aftermarket ones unless you want to do the job twice. By far the best value out there on these, and beats the price from Ford by a mile.

Received nicely packed and quickly shipped...
even included a cool Riff-Raff sticker also :)

TIP: Use a curved pick to "walk" the o'rings on vs what you see all over the place on youtube were guys basically roll them on (there is a chance of rolling the o'ring that way) and If you do push and roll the o'rings on please check them to see that they are not rolled once they are in place.

No problems. Great product! Exactly what I needed.

Worked awesome and at a very good price!

I returned the orings but only because just after i ordered them riffraff let me change my mind and order stage one injectors. They showed up and looked great

Everything was there and came in a timely manor. No hassle!

The alliant injector o-rings fit great and sealed up good as they always do.
The only reason I'm giving 4 stars is because for some reason or another one of the packages of o-rings was missing a square cut cushion o-ring but had 2 steel backup o-rings, not that big of a deal.
This is the first time I have ever seen this I'm sure it happens now and then.
But this has no reflection on riffraff, I got the parts very quickly as always and great service from them.
Will definitely keep buying parts from riffraff.

o rings fit perfectly, went on no problem, everything was there

Awesome product easy to install & no issues so far. I will defiantly be buying Alliant Injector O rings again.