90017-PCX-013 Bolt-Washer (16X49) - Overview. The 90017-PCX-013 Bolt-Washer (16X49) is a crucial hardware bolt-washer assembly designed for use primarily in Honda marine engine systems and applicable automotive applications. It functions to secure components with precision and reliability, supporting engine operations by maintaining proper tightening and stability under pressure and vibration. Designed to meet stringent factory specifications, it ensures seamless integration with existing parts,