The McCormick 973539M1 is a genuine OEM drain plug designed for various Massey Ferguson, Landini, and McCormick agricultural tractors. This essential component features an M22x1.5 thread, a length under head of 12 mm, and requires a 22 mm wrench for installation. It ensures a secure seal for fluid reservoirs, preventing leaks and maintaining optimal machine performance. Confirmed fitment across numerous Massey Ferguson models.