This Mercury 91-56048 Pinion Gear Housing Shimming Tool is a must-have for any boater looking to maintain their Mercury outboard engine. It is a genuine OEM part, ensuring high-quality performance and compatibility with your engine. The tool is designed to make shimming and adjusting your engine's pinion gear housing easy and accurate. Whether you're a professional mechanic or a DIY enthusiast, this shimming tool is a valuable addition to your toolkit. It is compatible with a wide range of Mercury outboard engines, and its durable construction ensures long-lasting use. Don't miss out on this essential tool for maintaining your boat's engine performance.