91201-ZV5-003 Oil Seal (30X42X8) - Overview. The 91201-ZV5-003 Oil Seal (30X42X8) is a crucial component in Honda marine engine systems. Its primary role is to prevent oil leakage and contamination, protecting vital engine parts and ensuring reliable operation. Designed to fit seamlessly into Honda engine assemblies, it maintains optimal sealing performance and durability, preserving engine function under demanding marine conditions.. Key Features. Precision-engineered oil seal measuring 30x42x8