Cat Pump Valve Repair Kit 30821 (310, 340, 350 & 5CP2120/50W PUMPS)

Cat 30821 Valve Kit For Models 310, 340, 350, 5CP2120W, 5CP2140WCS or 5CP2150W pumps Kit includes: Back-Up Ring, Seat O-Ring, Seat -70D Seat Valve Spring Valve O-Ring, Valve Plug 2 kits are required to fix 1 pump completely