The McCormick 6645658A4 is a genuine OEM seal kit designed for Perkins 1004.40T engines. This essential gasket kit ensures optimal sealing and performance, preventing leaks and maintaining engine integrity. It is compatible with a wide range of McCormick agricultural machinery, including CX, MC, MTX, XTX, MBT, X60, X70, X4, X5, X6, X7, and X8 series tractors. This high-quality kit measures 95 mm in length, 51 mm in width, and 10 mm in height, with a weight of 0.12 kg, providing a precise fit for reliable engine maintenance.