Founded in 1960, King Engine Bearings is a world-class developer and manufacturer of engine bearings for automobiles, light to heavy-duty trucks, marine, aviation, standby power and other types of internal combustion engines. King’s only product is engine bearings. As a result of its specialization and focus, the company is recognized for producing the highest quality engine bearings available in the market today. Applications include Mercury Marine - 181 3000cc 4 Cylinder. Mercury Marine 181 - King Rod Bearings CR4361Si Std.