Anyone know what size the O-rings are for the fuel rail? Not the fuel injectors, but the actual tubes for the fuel rail.

The AP stores don't carry O-ring kits and it appears Fel-Pro only makes injector O-rings. I already have those.

I have a source for O-rings, I just need to know what the correct size is so I order the right ones.

TIA

 

I don't know the size, but I'd just grab a few packs of the Help! o-rings. They have them in there. I know I used them for the fuel rail, as well as for the fuel filter. Get the "brown" ones, not the "black".

 

Try this web site. I believe they have some.

http://www.hotrodlane.cc/

 

Cross communication tubes: 2-110
Return line @ Regulator: 2-109
Stub aluminum tube between Regulator and Rail: 2-012

If you have a cold start injector there are two more o-rings where it plugs into the back of the driver side rail. I don't have one on my car but I can look up the sizes of them if you need.

I use 70 Durometer Viton o-rings to redress my rails.

 

You can order the complete set from GM for not too much money

 

NAPA has them--I bought them from NAPA last year