|ref=Smithsonian NASM BMW IIIa specifications |type=6-cylinder, inline, water-cooled, piston engine |bore=150 mm (5.9 in) |stroke=180 mm (7.1 in) |displacement=19.085 L (1,165 cu in) |length=170.2 cm (67.01 in) |diameter= |width=50.8 cm (20 in) |height=105.4 cm (41 in) |weight=293 kg (646 lb) |valvetrain=SOHC (single overhead camshaft) |supercharger= |turbocharger= |fuelsystem=Two-barrel altitude compensating (to 2 km) carburetor |fueltype= |oilsystem= |coolingsystem=Water-cooled |power=134 kW (180 hp) at 1,410 rpm |specpower= |compression=6.4:1 |fuelcon= |specfuelcon= |oilcon= |power/weight= }}
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