Mercury - Serpentine Belt & Pulley Kit MerCruiser Engine System Steel & Composite Components 8M0150824. Overview. There's a certain comfort that comes from knowing every part of your engine is doing exactly what it's supposed to do. When you fire up the motor, you want smoothness-not squeals, skips, or surprises. The Quicksilver 8M0150824 Serpentine Belt and Pulley Kit brings that confidence back to your setup. It's the kind of part you install once and can forget about, because you know it's th