QSB6.7 Cummins Cylinder Head 5364892/5361593 Parts Catalog Ref No. Part Name Part No. Required 　 Cylinder Head PP98291 　 　 Fracture Resistant Screw 3927063 26 　 Cylinder Head Gasket 4932210 1 　 Cylinder Head 5364892/5361593 1 　 Valve Collet 3940123 48 　 Exhaust Valve 3940734 12 　 Intake Valve 3940735 12 　 Valve Spring Retainer 3943198 24 　 Valve Stem …