14520-RAA-A01 Cam Cn Tn Arm - Overview. The 14520-RAA-A01 Cam Cn Tn Arm is a crucial component within Honda marine engine systems. It functions as a cam chain tensioner arm, responsible for maintaining proper tension and alignment of the camshaft timing chain. By ensuring accurate valve timing, it supports the engine's reliable operation and enhances overall performance. Engineered to fit seamlessly with existing parts, it guarantees optimized durability and smooth integration.. Key Features. Es