13811-ZW5-000 Crankshaft Pulley - Overview. The 13811-ZW5-000 Crankshaft Pulley is an essential component of the Honda marine engine systems, responsible for transferring rotational power from the engine's crankshaft to drive critical accessories such as the alternator and water pump. As a vital part of the engine's mechanical system, this pulley supports smooth engine operation and longevity. Designed to meet OEM standards, it ensures seamless integration with existing parts, maintaining optima