Sierra 18-4459 Marine Propeller Wrench for Mercury/Mercruiser

The Sierra 18-4459 is a specialized marine propeller wrench designed for removing and installing propellers on Mercury and Mercruiser outboard motors and stern drives. This essential service tool provides the proper leverage and fit needed to safely work with propeller hardware without damaging threads or components.

Key Features:

• Direct replacement for Mercury/Mercruiser part numbers 91-821887A-1 and 91-859046Q4
• Designed specifically for Mercury and Mercruiser propeller nuts
• Durable construction for marine environment use
• Proper tool geometry prevents damage to propeller hardware
• Essential tool for propeller maintenance and replacement

This wrench is a must-have tool for any Mercury or Mercruiser owner performing propeller service, whether replacing a damaged prop, switching to a different pitch, or performing routine maintenance. Using the correct OEM-style tool ensures safe removal and proper torque during installation.

Replaces OEM Part Numbers: Mercury Marine 91-821887A-1, 91-859046Q4