Overhauling Kit For Unloader Valve (Kbi Part No. 1197710) Of Electric Ccb For 3 Phase Lo Comotives. One Set Consist Of 04 Items 04 Nos. (1) Compression Spring Part No. C150925, Qty.- 01 No. (2 ) Piston Assly. Part No. 1175554, Qty.- 01 No. (3) O-Ring Part No. C150951, Qty.- 01 No. (4) Gasket Part No . C150952, Qty.- 01 No. [ Warranty Period: 30 Months After The Date Of Delivery ] ]