56170-ZZ3-003 Manual Valve - Overview. The 56170-ZZ3-003 Manual Valve is a crucial component engineered specifically for Honda marine engine systems, supporting hydraulic control mechanisms such as trim and tilt functions. This valve is designed to manually control fluid flow, playing a vital role in maintaining the precise operation of the power trim and tilt system. By ensuring seamless integration with existing parts, it maintains optimal performance and durability.. Key Features. An OEM genu