The Land Rover Series 1 2 3 Gearbox Mainshaft Bearing Housing / Overdrive Gasket, Part Number 622047. This gasket is designed specifically for the mainshaft bearing housing, ensuring a secure and reliable seal for your vehicle's transmission. With manufacturer part numbers 622047 and 217680, you can trust that this product is made to the highest standards of quality and compatibility for your Land Rover Series 1 2 3 vehicle.