This rear main bearing is a perfect fit for your Chevrolet 1940-1947. It is a high-quality replacement part with a brand name you can trust. The part is designed to fit perfectly and provide reliable performance for your engine. The vintage part has an interchange part number of EB-1086-2 and a manufacturer part number of 3847079. It is made by Moraine and is compatible with Chevrolet engines. The placement on the vehicle is in the rear. This item is a great addition to your engine bearings collection and will ensure your engine runs smoothly.