Spanner Nut Wrench: Precision Tool for MerCruiser Alpha One & Bravo Optimize your marine maintenance tasks with our Spanner Nut Wrench, expertly designed for MerCruiser Alpha One and Bravo systems. This tool is essential for effortless dismantling and installation of drive shaft bearing retainers. Versatile Application: Specifically crafted for dismantling and installing drive shaft bearing retainers on MerCruiser Alpha One & Bravo, this spanner nut wrench simplifies your maintenance routine, ensuring efficient and precise work. OEM Replacement: This tool replaces OEM part numbers 91-17256, 91-36235, and 18-9803, offering a perfect fit and reliable performance. Ensure compatibility with your existing equipment for seamless integration. Superior Quality: Manufactured from premium-quality materials, this wrench features precision machining and undergoes strict testing to guarantee its reliability and long service life. Trust in its durability for consistent use in demanding marine environments. Easy to Use: Equipped with a 1/2-inch socket drive, this wrench is ideal for use with a circuit breaker lever or torque wrench. It efficiently removes the 4-3/8-inch fixing nut, making your maintenance tasks straightforward and hassle-free. Compatibility Note: Please note that this spanner nut wrench is not suitable for Bravo 2, 3, XR, or TR models. Ensure compatibility to maximize the tool's effectiveness and avoid potential issues. Enhance your marine maintenance toolkit with our Spanner Nut Wrench. Order now to experience precision handling, superior durability, and efficient performance, ensuring your marine engines run smoothly and reliably.