91214-RNB-A01 Oil Seal (80X98X10) - Overview. The 91214-RNB-A01 Oil Seal (80X98X10) is a vital component in Honda marine engine systems. This rear main oil seal supports the engine crankshaft system by preventing oil leaks while protecting against contaminants. Meticulously engineered and tested, it ensures reliable sealing to maintain optimal lubrication and mechanical efficiency. Its design enables seamless integration with existing engine parts, upholding top-tier performance and durability..