63102-ZV7-300 Engine Cover Seal - Overview. The 63102-ZV7-300 Engine Cover Seal is a genuine Honda OEM rubber gasket engineered specifically for Honda marine engine systems. This crucial sealing component supports the engine cover system by creating a watertight seal that prevents water ingress and protects the internal components of the marine engine from moisture and debris intrusion. Constructed to exact factory dimensions and tolerances, the seal ensures seamless integration with existing pa