oh kit for gm type m/s. topgrip make auto drain valve, kit consists of 10 items as givenbelow: 1) seat (teflon), part no. t-52/14 - 02 nos/set 2) o ring 2-5/8 id, part no. t-52/03 - 1 no./set 3) oring 1-7/16 id, part no. t-52/06 - 2 nos/set 4) o ring 1/4
