Depending on the model and make of your car, as well as whether you're replacing a fuel-efficient carburetor or a performance carburetor. Carburetor replacement costs typically range from $500 to $2000. The cost of rebuilding a carburetor, on the other hand, might be only $200 to $500.   Depending on the condition of the carburetor, extra-cost items such as thread repair, booster installation, screw recoloring, etc., may be necessary.