The McCormick 3536535M1 valve guide is a genuine OEM component designed for Perkins engines used in various Massey Ferguson, Landini, and McCormick agricultural machinery. This precision-engineered guide ensures proper valve stem alignment and operation, contributing to optimal engine performance and longevity. With a length of 62.5 mm, an outer diameter of 13.05 mm, and an inner diameter of 8.00 mm, it meets original equipment specifications for reliable fit and function.