This clutch dog gear is designed for 15 horsepower marine outboard engines. It serves as a compatible replacement for the original part number 682-45631-00, which is a critical component within the lower unit's gear shifting mechanism. Manufactured to align with technical dimensions and functional requirements, this part is intended to restore proper engagement between forward, neutral, and reverse gears. Please verify your engine model, production year, and existing clutch configuration prior to installation to ensure compatibility.