23172-ZVP-005 Mount Case Gasket - Overview. The 23172-ZVP-005 Mount Case Gasket is an essential component designed to support the mounting case system in Honda marine engine systems. This gasket plays a critical role in sealing the mounting case to prevent leaks and maintain the structural integrity of the engine assembly. Crafted to meet factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. OEM genuine gasket