23173-ZY3-010 Mount Case Seal Rub - Overview. The 23173-ZY3-010 Mount Case Seal Rub is a critical component within Honda marine engine systems. This rubber mount case seal is designed to create a watertight barrier in the engine's mounting case, preventing water ingress and protecting internal parts of the engine from corrosion and damage. It supports the sealing system of the marine engine, ensuring reliable operation and longevity.. Key Features. Genuine OEM Honda Rubber Mount Case Seal for marine engines.. Provides an airtight and waterproof seal to prevent water entry.. Manufactured to meet factory specifications, dimensions, and tolerances.. Seamlessly integrates with existing hardware, seals, and housings.. Enhances the durability and performance of engine mounting systems.. Maintains optimal engine protection against water-induced damage.. Why Choose Genuine OEM. Using original Honda parts like the 23173-ZY3-010 Mount Case Seal Rub preserves the integrity of your marine engine.