The Boat Marine 865598 idler flat pulley is a must-have item for all Mercury Outboard Motor owners, specifically those with 4.3 to 8.2L engines. Designed for superior performance and longevity, this high-quality component ensures smooth and vibration-free operation, ensuring your vessel's smooth and quiet ride. Our idler flat pulley is engineered to perfectly fit your Mercury Mercuriser motor, providing a secure and reliable connection that promotes energy efficiency and reduces wear and tear on your motor's other components. Its lightweight and durable design makes it easy to install, minimizing the need for additional tools and time. With our 8M6500024 and 818382 part numbers, you can quickly and securely replace your idler flat pulley, extending the lifespan of your Mercury outboard motor and enhancing your boating experience. Invest in quality and peace of mind with the Boat Marine 865598 idler flat pulley - a smart choice for any angler on the water.