part 117275 Spring, Check Valve Cat Pumps code 117275 Details Cat Pumps number117275 DescriptionSpring, Check Valve Qty per pump1 Also comes in 76185 Kit, Check Valve (Includes: 443, 444, 446) Fits these pumps Cat Pumps Plunger pumps 4 66DX30G1I66DX35G1I66DX40G1I66DX50G1I