The King Engine Bearings Main Bearings MB5269AM0.5 are high-quality bearings designed for use in automotive engines. These bearings are made from durable materials and are precision-engineered to provide optimal performance and reliability. They are designed to fit perfectly into the engine block and provide smooth operation, reducing friction and wear. The MB5269AM0.5 bearings have a 0.5 undersize, making them ideal for engines that have been machined to accommodate oversized crankshafts. These bearings are suitable for a wide range of engine types and are a popular choice among mechanics and car enthusiasts.