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The BMW M52 is a six-cylinder in-line petrol engine from the car manufacturer BMW and was introduced in September 1994 as the successor to the M50 engine. It was first used in the BMW E36 as a 320i/323i/328i. The cylinder spacing and bore as well as the VANOS camshaft adjustment system for the intake camshaft and the cylinder-selective knock control as well as the crankshaft bearing cap and vibration damper were adopted from the M50TU. In the 2.0 and 2.5 liter variants of the M52, the crankshafts were also adopted from the predecessor.