Go on Mcmaster-carr and you can buy a bag of 50 of the "O" Rings for the
Injectors. You don`t always need to buy a whole new return kit.
Viton "O" Rings size 111.
https://www.mcmaster.com/products/o-...mer-o-rings-8/
Always good to have them on hand. Sometimes messing around on the engine, if you move a
Injector cap etc... it can start to leak, IDK why, just the way it is.
If one needs replaced, best to just do the whole side. Pull them off, clean up the Injector tops,
grease them up, slide on the first ring, then slide the 2nd one over the first one. Place all 4 caps
on as an assembly, and snap them down. Should be good to go.
Goat