15131-414-000 Rotor (Inner) - Overview. The 15131-414-000 Rotor (Inner) is a crucial component of Honda marine engine systems. It supports the oil pump system, playing an essential role in maintaining reliable lubrication and overall engine performance. By facilitating efficient oil flow within the pump assembly, this rotor helps preserve engine durability and smooth operation. Crafted to meet precise factory specifications, it ensures seamless integration with existing parts and maintains optimal performance and durability.. Key Features. Genuine Honda OEM part designed specifically for marine oil pump systems.. Functions as the inner rotor within the oil pump assembly.. Manufactured to match exact factory dimensions, material, and tolerances.. Ensures proper fit and compatibility with Honda marine engine components.. Contributes to efficient oil circulation and engine lubrication.. Supports sustained engine reliability and longevity.. Why Choose Genuine OEM. Using original Honda part