This Genuine Tohatsu Marine Part is a Cylinder Head with the part number 3B7-01001-0 or 3B7B01001-0. The cylinder head is a crucial component of the engine as it houses the combustion chambers and valves. It is responsible for sealing the combustion chambers and ensuring proper compression and combustion within the engine. This Genuine Tohatsu Marine Cylinder Head is specifically designed and manufactured by Tohatsu, a trusted brand in the marine industry, to ensure optimal performance and durability. It is a reliable replacement part for your Tohatsu outboard motor, guaranteeing a perfect fit and compatibility.