This genuine OEM McCormick 6521906M1 valve seat is designed for optimal performance in Perkins engines, as well as a wide range of Massey Ferguson, Landini, and McCormick agricultural tractors. Featuring an outer diameter of 39.4 mm, an inner diameter of 32.5 mm, and a height of 7.6 mm, this precision-engineered component ensures a secure seal and reliable engine operation. It is a critical part for engine maintenance and repair, ensuring proper valve function and longevity.