The Alfa Romeo Monoposto Type B P3 was designed by Vittorio Jano and was successfully raced in 1932 and 1933. Six cars were produced in 1932. The chassis is ladder type made of steel. The engine is a 8 cylinder made of two 4 cylinder blocks with twin overhead camshaft. The engine has 2.654 cc. capacity and produces 215 hp at 5.600 rpm. It is fitted with two Roots supercharger.