31247-ZY3-003 Gear Assembly (Inner) - Overview. The 31247-ZY3-003 Gear Assembly (Inner) is an essential component of Honda marine engine systems. It supports the internal gear mechanism crucial for power transmission and mechanical operation in marine equipment. Designed to meet strict factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine Honda OEM internal gear assembly designed for Honda marine engines.. Essential for reliable power transmission within the marine drive system.. Manufactured to exact factory dimensions and tolerance ensuring a precise fit.. Integrates cleanly with existing hardware and internal components to maintain system integrity.. Supports efficient mechanical motion enabling smooth engine operation.. Durable construction designed to withstand the marine environment and usage stresses.. Why Choose Genuine OEM. Using original Honda parts like the 31247-ZY3-003 Gear Assemb