1Part Number: Shifter clutch dog replace part number is 6H1 45641 01 00 for reference. Please double check the part number of your item to ensure perfect fit. 2High Compatibility: Specially designed for Outboard Motor 2 Stroke 60hp 90hp, such as for 90ETLN Lower Drive 1 1984, for 90ETXN Lower Drive 1 1984, etc. 3Smooth Shifting: The shifter clutch dog ensures smooth and precise shifting between gears, ensuring that the boat's propulsion system operates efficiently and safely. 4Durable Construction: Made from durable steel materials, designed to withstand the demanding marine environment and provide long lasting performance. 5Easy Installation: The shifter clutch dog is designed for easy operation, making it convenient for boat owners or marine technicians to replace or maintain this essential component.