61102-MB6-631 Fender Mounting Rub - Overview. The 61102-MB6-631 Fender Mounting Rub is a critical rubber mounting component used in Honda marine engine systems. It plays an essential role in providing sturdy, vibration-absorbing support for the fender assembly, ensuring that the overall mounting system remains secure and functions effectively. This part is specifically engineered to maintain proper positioning and reduce mechanical stress caused by vibration and movement in marine environments.