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High Quality Content by WIKIPEDIA articles! The BMW M73 is a V12 piston engine built in Munich, Germany. It has an Alusil aluminum engine block and aluminum SOHC cylinder heads. While most other engines in the BMW had switched to four valves per cylinder, the M73 used 2-valve SOHC heads and featured fracture-split forged steel connecting rods. The M73 won the "Above 4 L" category of the International Engine of the Year awards for 1999. Some versions of the engine have two separate Bosch Motronic electronic fuel injection systems left and right, while others have an integrated system. The N73B60 is a 6.0 L (5972 cc) version, now switching to four valves per cylinder and the Valvetronic variable valve timing system. Its bore is 89 mm and stroke is 80 mm. It is used in the 760i and 760Li. Output is 445 PS (438 hp SAE/327 kW) at 6000 rpm with 600 N m (443 ft lbf) of torque at 3950 rpm.