15133-414-000 Rotor (Outer) - Overview. The 15133-414-000 Rotor (Outer) is an essential component of the oil pump system in Honda marine engines. It functions as the outer rotating element within the oil pump mechanism, playing a critical role in maintaining proper oil circulation and ensuring reliable engine lubrication. This part is key to supporting the oil pump system and keeping your marine engine operating smoothly and efficiently.. Key Features. Genuine Honda OEM part ensuring exact facto