31229-ZW1-004 Sleeve Stopper Set - Overview. The 31229-ZW1-004 Sleeve Stopper Set is a crucial component within Honda marine engine systems. It functions as a stopper for a sleeve component in the engine assembly, helping to keep the mechanical parts properly aligned and secured during operation. Designed for reliability and performance, this part supports the smooth functioning of the engine's assembly and contributes to long-term durability.. Key Features. Genuine OEM Honda part ensuring factory specifications are met.. Functions as a stopper for the sleeve component within the engine.. Helps maintain precise mechanical alignment and motion.. Manufactured to exact factory tolerances for a perfect fit.. Seamlessly integrates with existing engine hardware and seals.. Preserves engine performance and operational feel.. Why Choose Genuine OEM. Using original Honda parts like the 31229-ZW1-004 Sleeve Stopper Set preserves your engine's integrity, ensuring the highest quality materials, pr