had an injector leaking, so i pulled and replaced all 6 with stock cummins injectors. my question is this, the numbers on the injectors i pulled out are not stock. F1244-4-9364 is the numbers i found on the injectors. can anybody tell me if these are F1 injectors, if so what size.

 

Its possible the injectors came from F1 Rebuilders.

http://www.f1diesel.com/injectorsecho.html

Can't help with the numbers.

Dave