6BT 6D102 Construction Machinery Parts Lubricating Oil Pump 3926203 3906414 3937404 4935792 3941742 The oil pump overhaul kit contains essential components for engine repair and maintenance of Perkins 403D-15, 403D-15T, and 404D-22 engines. Compatible with DL300A DX300LCA SD300E Excavator models. Kit Components Gaskets and Seals: Prevent oil leaks at pump housing, cover plate, and mounting surfaces Rotors or Gears: Primary pumping elements (inner/outer rotors or gear sets)