Quicksilver 16155 Driveshaft Woodruff Key for Mercury Outboard Motors

The Quicksilver 16155 is a genuine OEM driveshaft woodruff key designed for Mercury and MerCruiser marine engines. This small but critical component locks the driveshaft in position, preventing rotation and ensuring proper power transfer through the lower unit assembly.

Key Features:

• Genuine Mercury Marine OEM part, not aftermarket
• Precision-manufactured for exact fit and reliable performance
• Essential component for driveshaft and water pump assembly
• Direct replacement for worn or lost keys during service
• Also known as Mercury part number 28-16155

This woodruff key is commonly replaced during lower unit service, water pump repair, or when performing maintenance on the driveshaft assembly. Its small size makes it easy to misplace during repairs, so many technicians keep spares on hand. The key ensures proper alignment and prevents slippage between rotating components in your outboard motor or sterndrive.