91302-ZW1-000 Pump Cover O-Ring - Overview. The 91302-ZW1-000 Pump Cover O-Ring is an essential sealing component within the Honda marine engine systems. Specifically designed to fit the pump cover assembly, this O-Ring prevents water and oil leaks, ensuring the marine engine operates reliably and efficiently. It plays a critical role in maintaining the integrity of the engine's cooling and lubrication systems by providing a seamless seal that resists wear and environmental factors. Compatible w