91301-ZV7-010 Pump Cover O-Ring - Overview. The 91301-ZV7-010 Pump Cover O-Ring is a critical sealing component designed for Honda marine engine systems. This O-ring supports the pump cover system by forming a durable watertight seal that prevents water and fluid leaks from the pump assembly. Its role is vital in maintaining engine reliability, ensuring that the cooling and lubrication systems function optimally without fluid loss. Engineered precisely for Honda, it ensures seamless integration