supply of overhauling kit , cock dh7-te conforming to m/s knorr bremses part no 188738 of the condition based item list provided by the oe ms. [ warranty period: 36 months after the date of delivery ] ] , overhauling kit for cock dh7 to kbi part no. i88738 for air brake system of lhb coaches.consisting of 0 6 items. s.no., description, kbi part no.,qty/set. (1) retaining ring, part no . 457709, qty/set =1 no. (2) knorrk-ring, pa rt no. 462575, qty/set =2 nos. (3) o ring , part no. a47412,qty/set =1 no.(4) o-ring, part no .a95468, qty/set =1no. (5) o ring, part no. k4140, qty/set =3 nos. (6) valve seat bushing, part no.c170298, qty/set =1 no [ warranty period: 36 mont hs after the date of delivery ] ]