ISX15 Cummins Exhaust Valve 4101454 Parts Catalog Ref No. Part Name Part No. Required Cylinder Head Rebuild Kit 2882041 A/R 5 Valve Spring 3679551 24 6 Valve Collet 3680883 48 8 Intake Valve 3685996 12 9 Exhaust Valve 4101454 12 13 Valve Insert 3104445 12 14 Valve Insert 3679659 12 18 Injector Sleeve 3412352 6 19 Rectangular Ring Seal …