QSB4.5 Cummins Intake Valve 4995554 Parts Catalog Ref No. Part Name Part No. Required 　 Pipe Plug 3008468 5 　 Pipe Plug 3008469 1 　 Pipe Plug 3906619 1 　 Hexagon Flange Head Cap Screw 3920779 6 　 Hexagon Flange Head Cap Screw 3920780 14 　 Cylinder Head 3967431 1 　 Valve Collet 3900250 24 　 Valve Spring 3916691 6 …