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Reference Information

Main Bearings, King SM-Series Main Bearings, Stock Size, Bi-Metal, Mitsubishi, Sold as a Set of 5

For high load and performance applications, King SM-Series main bearings are the strongest aluminum-based material offered by King. The alloy is strengthened by the addition of manganese and chromium. SM-Series crankshaft main bearings feature a traditional steel-backing, aluminum bonding layer, and the aluminum bearing alloy. They are available for a wide variety of vehicle and engine applications.