63736-ZY3-A12ZA L *NH282MU* Cover - Overview. The 63736-ZY3-A12ZA L *NH282MU* Cover is a crucial component for Honda marine engine systems, serving as the lower mounting port cover. This cover supports the structural integrity of the engine's lower mounting system, ensuring protection against environmental elements and contributing to the shell's overall durability. Designed to the exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal performance