GM (general motor) hub process is an important part in the whole manufacture so the modeling of its cost and quantity has been preceded. It is found that the γ is 1.2 which is fitter coefficient to hub because the price is available according to the economics cost theory. So we analyze the labor and capital to be best and find that they are labor of 7 and capital of 20. To compare them with other parts it is done that 5 and 10 respectively to look for other information. It is found that they are more available in quantity and price.