510003 Bearing - Auto Wheel Bearing 40x74x40mm Sealed510003 Bearing Auto Wheel Bearing 40mm Bore Double Row Sealed 510003 (DAC40740040) The 510003 Bearing is a double row auto wheel bearing designed for dependable fit and performance in a wide range of vehicles. With a 40mm bore and heavy duty rubber seals on both sides, it keeps out debris while keeping the grease right where it should be. Great for front or rear wheel hubs in compact cars and coupes. Type: Double row wheel bearing Part #: DAC40740040