Awesome just what i needed to know. The 606.912 has 5.5 elements i believe. As for delievery valve the line threaded right on without chasing it and torqued down felt good so i might be alright. Going to throw the pump in within a couple days. I made my pressure tester and dismantled the injectors and gave everything a good cleaning. Soaked all components in diesel when i reassembled, going to test their patterns/pressures they go off at and see if they are weeping before popping. Happen to know their torque spec? Along with delievery valve spec too?