11100-ZVT-405 Crankcase - Overview. The 11100-ZVT-405 crankcase is a vital component of Honda marine engine systems. It serves as the core housing that encloses and supports the crankshaft, ensuring smooth mechanical operation within the engine's internal assembly. Designed specifically for Honda marine applications, this crankcase works seamlessly with other engine components to maintain the structural integrity and efficient functioning of the engine systems. Manufactured to meet factory speci