The product is a Mercury Marine MerCruiser Alpha One Gen 1 Stern outdrive outdrive, specifically designed for a V8 engine. This sterndrive unit, with the manufacturer part number 5010147R1, provides the necessary propulsion and control for a boat equipped with a V8 engine. The MerCruiser brand is known for its quality and durability in the marine industry, making this product a reliable choice for those looking to upgrade or repair their boat's sterndrive system. Has been tested and inspected!