91203-ZY1-003 Oil Seal (28X45X8) - Overview. The 91203-ZY1-003 Oil Seal (28X45X8) is a precision-engineered component essential for Honda marine engine systems. This oil seal supports the lubrication system by preventing oil leakage around rotating shafts, ensuring efficient operation and protection of engine internals. Designed to fit seamlessly within the oil seal system, it guarantees durability and effective sealing that keeps contaminants out while retaining lubricants for optimal engine pe