14510-PNA-003 Cam Chain Tensioner - Overview. The 14510-PNA-003 Cam Chain Tensioner is an essential component of Honda marine engine systems. It maintains proper tension on the cam chain, a critical part of the timing system that ensures accurate valve operation and engine timing. This tensioner supports the camshaft system, preventing slack and ensuring precise mechanical motion for reliable engine performance. Meticulously engineered to meet Honda's factory specifications, it ensures seamless