This ACDelco Advantage brake disc rotor is a high-quality replacement part for your vehicle. It is designed to fit the left, right, and front placement on your car or truck. The rotor is made of durable cast iron material with a non-directional finish. The 18A2450A model has a rotor outside diameter of 10.8 inches and a thickness of 25mm. The discard thickness is 22mm, and the item length is 11.2 inches. The bolt pattern is 5 x 114.3mm, and the rotor style is vented. This brake disc rotor is not a vintage part, and it is not a universal fitment. It is a genuine OEM part that is perfect for your car or truck.