14270-ZY3-A00 Lt/b Drvn Pulley - Overview. The 14270-ZY3-A00 Lt/b Drvn Pulley is a critical component in Honda marine engine systems, supporting the timing belt drive system. As a left-hand driven pulley, it plays an essential role in the power transmission mechanism, ensuring the engine operates reliably and efficiently. Precision-engineered for Honda marine applications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine