The Carburettor is mounted on carb mountings which are designed to act as a sealant, holding the carb firmly in position and perfectly aligned. The carb mountings are usually a flange/plate used with circular rubber seals to create a soft, secure fix between the carb and the mount.
The carb mountings function to strengthen the holding of the carb to the intake manifold and to keep it in the right position, as well as absorbing vibrations and noise from the engine.
The carb has the important job of ensuring the right amount of air and fuel mix is provided to the cylinders in the engine in order for combustion to take place and for the engine to perform at its best. The Carburettor is essentially a pipe through which the air needed for combustion travels. The carb narrows in the middle which causes the pressure in the air, as it flows through the carb, to drop at this point, creating a vacuum which sucks the fuel in. It works by using valves, referred to as the choke and throttle, which take in the right amount of air and fuel which is mixed in the carb before it is sent to the engine.
Carb mountings will wear over time and can become brittle and cracked. Warped carb mountings can lead to a vacuum leak. Replacing this part when it has failed with carb mountings will ensure perfect compatibility, specifically designed for the make and model of your vehicle.