The tailgate of various car makes may not be the same. In the case of Mitsubishi makes, tailgates are crafted with optimum coating and polishing to have greater resistance against rust, corrosion and damage. Mitsubishi tailgates can still of course be exposed to rust but with its top quality coating; longer service, performance and use can be expected. As replacement, tailgates must be of exact fit and finish to fit into the contours of the vehicle. It is even preferable to bring the car with you if planning to buy a new one.
Traditional local stores are not the sole source of aftermarket or OEM tailgate replacements which is the case way back. Nowadays, on-line stores are available to offer products and services needed by any car makes including Mitsubishi tailgates.