MPI Gm Standard Oil Drain Kit 12 x 1.75mm #3080380GM Standard Oil Drain KitFor 1996 and prior engines12 x 1.75mm UNF ThreadThreads into the bottom of oil pan to allow draining of engine oilSimply push the hose through the transom drain plug hole or place anywhere below oil panAssembly includes oil resistant hose with noncorrosive brass fittingsPlease Note: This does NOT fit all drain... More