96220-50178 Roller (5x17.8) - Overview. The 96220-50178 Roller (5x17.8) is a critical OEM component designed to support Honda marine engine systems, specifically within the oil pump assembly. This genuine Honda part facilitates smooth rotational movement necessary for efficient oil flow and pump operation, ensuring the longevity and reliable performance of your marine engine. Engineered to exact factory specifications, it ensures seamless integration with existing parts, maintaining optimal perf