15625-ZVD-000 Oil Filler Cap Gskt - Overview. The 15625-ZVD-000 Oil Filler Cap Gskt is an essential component for the oil filler cap system in Honda marine engines. This genuine OEM gasket plays a critical role in sealing the oil filler cap to prevent oil leaks and external contamination, ensuring smooth engine operation and longevity. Designed to precise factory specifications, it fits seamlessly with the oil filler cap housing and supports reliable engine performance by maintaining a proper se