90131-ZY3-620 Stud (10X170) Bolt - Overview. The 90131-ZY3-620 Stud (10X170) Bolt is a critical fastener used in Honda marine engine systems. It secures various components within the engine and rigging assemblies, ensuring reliable mechanical connections under demanding marine conditions. Manufactured to meet exact Honda OEM standards, it ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. Genuine OEM Honda stud bolt manufactured to pr