Carburettors and associated parts mechanically mix air and fuel in precise ratios for internal combustion engines, primarily found in older or small-engine applications. Components include jets, floats, chokes, and emulsion tubes, all calibrated to regulate fuel delivery based on engine demand. These parts utilize venturi effects and pressure differentials to atomize fuel for efficient combustion. Repair typically involves rebuild kits containing gaskets, seals, and wearable components to restore original performance. Modern replacements increasingly feature improved materials for corrosion resistance and precise manufacturing tolerances.