This Genuine Tohatsu Marine Part is an Engine Short Block with the part number 3F9B87100-3. It is a high-quality replacement part designed specifically for Tohatsu engines. The short block is an essential component of the engine, housing the cylinders, pistons, and crankshaft. It is responsible for the engine's power and performance. This particular short block is compatible with the Tohatsu engine models 3F9B87090-3 and 815040A05. It is manufactured to meet the strict standards and specifications set by Tohatsu, ensuring optimal performance and durability. Whether you need to replace a damaged short block or upgrade your engine, this Genuine Tohatsu Marine Part is a reliable choice.