QSK50 Cummins Injector 3349860 Parts Catalog Ref No. Part Name Part No. Required 　 Injector 3349860 16 1 Check Ball 167157 1 2 Injector Gasket 173086 1 3 Screen Retainer 174299 1 4 Injector Cup Retainer 3042430 1 5 O-Ring Seal 193736 3 6 Roll Pin 203426 2 7 Filter Screen 3054999 1 9 Injector Spring 3042427 1 10 Injector …