The BMW M73 is a V12 piston engine built in Munich, Germany. It has an aluminum engine block and aluminum DOHC cylinder heads. The cylinders are lined with cast iron. It uses GDI fuel injection, has 4 valves per cylinder with VVTL and features fracture-split forged steel connecting rods.
A 5.4 L M73 produces 240kW.
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. Bore is 89 mm and stroke is 80 mm. It is used in the 760Li. Output is 438 hp (327 kW) at 6000 RPM with 444 ft.lbf (602 Nm) of torque at 3950 RPM.
Applications:
See also