91253-ZV0-003 Seal (11x21x8) - Overview. The 91253-ZV0-003 Seal (11x21x8) is a critical component supporting the water sealing system in Honda marine engine gear cases and vertical shaft propellers. This seal plays an indispensable role in preventing water ingress and oil leakage, essential for maintaining reliable marine engine operation and longevity. By ensuring tight sealing around rotating components, it preserves the system's integrity, reduces wear, and prevents costly repairs.. Key Featu