90951-ZV7-010 Grease Nipple - Overview. The 90951-ZV7-010 GREASE NIPPLE is a specialized fitting used in Honda marine engine lubrication systems. It plays a crucial role in allowing the injection of grease into specific lubrication points, maintaining smooth operation and reliability of engine and marine equipment components. Designed specifically for Honda marine engines, this part ensures seamless integration with existing parts, maintaining optimal performance and durability.. Key Features. P