91212-PNC-004 Oil Seal (43X58X7) - Overview. The 91212-PNC-004 Oil Seal (43X58X7) is a critical sealing component designed for Honda marine and automotive engine systems. It supports the crankshaft system by providing a tight seal to prevent oil leakage and keep contaminants out, ensuring reliable engine operation. Made with precision to match factory dimensions of 43mm inner diameter, 58mm outer diameter, and 7mm thickness, it ensures seamless integration with existing parts, maintaining optima