supply of 68235684-oh kit piston valve 68235685-oh kit magnet valve 68235686- oh kit piston 68235689- oh kit emergency 68235697-oh kit driver, overhauling kit for piston valve ( pvbc & pveri ) to kbil .part no. i88098 / 341 as per annexure enclosed. [ warranty period: 30 months after the date of delivery ] , overhauling kit for piston valve ( pvbp & bpco ) to kbil part no.i98866 as per annexure enclosed [ warranty period: 30 months after the date of delivery ] , overhauling kit for magnet valve ( mvem & mver ) to kbi part no.i94900 / 1024 as per the annexure enclosed. [ warranty period: 30 months after the date of delivery ] , overhauling kit for emergency valve ( pvem ) to kbil part no. i71095 as per annexure enclosed. [ warranty period: 30 months after the date of delivery ] , overhauling kit for drivers back-up valve to kbil part no.787609 for ccb 2.0 air brake system as per annexure. [ warranty period: 30 months after the date of delivery ]