part 43907 Retainer, Spring Cat Pumps code 43907 Details Cat Pumps number43907 DescriptionRetainer, Spring Qty per pump6 Also comes in 30915 Valve kit, NBR (STD)31214 Valve kit, FPM (.0110)31215 Valve kit, EPDM (.0220) Fits these pumps Cat Pumps 3 Frame 3 230240270