14631-PNE-000 Inner Rocker Shaft - Overview. The 14631-PNE-000 Inner Rocker Shaft is a critical component within the valve train system of Honda marine engines. It plays an essential role in actuating the intake valves by supporting the rocker arms, which ultimately control fuel intake and exhaust flow. Designed with precision to meet strict factory standards, this part ensures smooth mechanical motion and reliable engine operation, integrating flawlessly with related hardware.. Key Features. Ge