Yamaha O-Ring - 93210-14MF4-00. Precision Seal for Lasting Yamaha Engine Protection. The Yamaha - O-ring - 93210-14MF4-00 is a factory-engineered sealing ring designed for dependable performance in high-pressure and high-temperature environments. This OEM part is a critical component for ensuring leak-free operation within Yamaha systems, from cooling assemblies to oil circulation routes.. Built with durability in mind, it maintains tight seals under stress, helping extend the life of your Yamah