The Weber 40 DCNF is a compact twin choke downdraft carburettor with synchronous opening. They are capable of high rates of flow making them ideal for highly tuned engines where restricted space means a DCOE carburettor can not be fitted.Compact body ideal for engine bays with restricted spaceCapable of high flow rates, ideal for highly tuned enginesCan be used individually or in multiplesThe Weber DCNF has been used successfully in competition use and as original equipment in supercars such as the Lamborghini Countach and various Ferrari's. The carbs are supplied with a standard set of chokes and jets, however a range of different size jets and chokes are available to buy separately.