90103-ZW4-H02 Bolt (M8X50) - Overview. The 90103-ZW4-H02 Bolt (M8X50) is a critical fastening component within Honda marine engine systems. This 8mm diameter, 50mm long bolt is designed specifically for marine applications, supporting the engine's structural integrity by securely fastening parts in place. Engineered to meet stringent Honda OEM specifications, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine Honda OEM bolt designed specifically for marine engine systems.. M8x50 specification ensures proper size and fit for designated applications.. Manufactured to exact factory dimensions, tolerances, and material standards.. Critical for maintaining the mechanical stability of engine components.. Compatible with Honda Marine brand's active marine product lines.. Ensures robust fastening, preventing loosening under engine vibrations and water exposure.. Why Choose Genuine OEM. Using original Honda parts like the