(1) 314834 1-1/4 in OD and (1) 0.687 in OD Copper Gasket, (1) 171001-20 1-5/16 in OD x 1-1/16 in ID, (2) 171001-12 13/16 in OD x 5/8 in ID O-Ring, (1) 316544 Gasket, (1) 3/4-20 Valve Seat, (1) Emergency Bypass Relief Valve, (1) 3 in L and (1) 1-1/4 in L Spring, (1) 316631 1.03 in OD and (1) 0.92 in OD Aluminum Gasket and (1) Pump Check Valve