This ignition coil is designed for use with Mercury outboard engines, specifically the Quicksilver MerCruiser model. Its part number is 8M0178581 and it has a capacity of 8.1 L. This coil is a crucial component for the ignition and starting system of your boat's engine, ensuring that it runs smoothly and efficiently. It is compatible with a variety of Mercury outboard engines and is a reliable choice for any boater.