28454-ZV1-003 Cushion Rubber - Overview. The 28454-ZV1-003 Cushion Rubber is a genuine Honda marine part specifically designed to absorb shock and vibration within Honda marine engine systems. It plays a critical role in maintaining the smooth operation of recoil starters, especially for models such as the Honda Outboard 5HP BF5A4 and BF5AK2. By dampening mechanical vibrations, it protects adjacent components, reduces noise, and prevents stress damage, ensuring the engine operates reliably and q