91302-ZW9-000 Pump Cover O-Ring - Overview. The 91302-ZW9-000 Pump Cover O-Ring is an essential sealing component within Honda marine engine systems. This O-ring supports the pump system by ensuring a tight, leak-proof seal in the pump cover assembly. By preventing water or oil leaks, it maintains system integrity and reliability, avoiding potential damage or reduced performance. Manufactured to precise OEM standards, it ensures seamless integration with existing parts, maintaining optimal perfo