King Engine Bearings Main Bearings MB5070AM1.0 are high-quality engine bearings designed to provide reliable and durable performance for a wide range of engines. These bearings are made from premium materials and are precision-engineered to ensure a perfect fit and optimal functionality. They are specifically designed to withstand high levels of stress and friction, making them ideal for use in high-performance engines. The MB5070AM1.0 bearings are 1.0 undersize, meaning they have a slightly smaller diameter than standard bearings, which allows for tighter tolerances and better oil clearance. These bearings are suitable for a variety of applications, including street, racing, and marine engines. With King Engine Bearings Main Bearings MB5070AM1.0, you can trust that your engine will run smoothly and reliably for miles to come.