14510-ZZ3-013 Tensioner - Overview. The 14510-ZZ3-013 Tensioner is a critical component of Honda marine engine systems, specifically designed to maintain the proper tension on the timing belt. This ensures the engine's valvetrain operates in precise synchronization with the crankshaft, which is vital for delivering optimal engine performance and longevity. Proper belt tension prevents slippage and mechanical failures, thereby ensuring reliable operation of your marine engine.. Key Features. Genu