13620-RAA-A02 Sprocket - Overview. The 13620-RAA-A02 Sprocket is an essential OEM component used primarily in Honda marine engine systems and select Honda automotive engines. This sprocket plays a vital role within the chain drive system, functioning as a toothed wheel that engages with the chain to transmit mechanical power. Its precision engineering ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Exact OEM sprocket designed for c