91215-PHR-003 Oil Seal (18X30X7) - Overview. The 91215-PHR-003 Oil Seal (18X30X7) is a critical component in Honda marine engine systems. This oil seal supports the manual transmission shift linkage system by preventing oil leaks and ensuring reliable sealing around moving shafts. Designed with precision to match factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. 18mm inner diameter, 30mm outer diameter, and 7mm thickness for exact fitment.. Genuine OEM Honda component ensuring high quality and reliability.. Seals shafts to prevent oil leakage, maintaining system integrity.. Manufactured by NOK, known for durable sealing solutions.. Works seamlessly with manual transmission shift linkage in Honda marine engines.. Precision engineered to meet Honda's factory specifications for performance and longevity.. Why Choose Genuine OEM. Using original Honda parts like the 91215-PHR-003 Oil Seal preserves the