I just want to verify.. I found they were .563" outer diameter and .137" thickness? So about 14.3mm O.D. and 3.5mm thick?

Should I just go to GM for them or somewhere else? What size exactly would I be asking for?

 

Standard Motor Products part# SK14. Cheap as dirt, can buy them from any auto parts store.

 

deee da deee

 

Awesome.. thanks a lot. Went to fire up the car and it sprayed out of the rear 2 injectors at the upper o-rings in the rail. When I took them back out, some of the lower ones had little surface tears in them as well so I want to just replace them all and call it a day.