The ACDelco 177-1245 GM 13518653 Front Brake Rotor is a high-quality, durable disc brake rotor designed specifically for GM vehicles such as the Equinox, Lacrosse, Terrain, and Envision. Made of cast iron, this vented rotor has an outside diameter of 12.64 inches and a thickness of 27mm. With a bolt pattern of 5 x 115mm, this rotor is designed for optimal performance and safety on the front left and right sides of the vehicle. It is a genuine ACDelco product manufactured in Mexico, ensuring quality and compatibility with your vehicle's braking system. Exact item is shown. New open box with partial packaging. Item has some handling wear, as shown. Item weight 19 lbs. Discard Thickness (mm):. 25.0mm. Outside Diameter (in):. 12.640 Inch. Center Hole Size (mm):. 71mm. Coated cast iron. 5x115mm bolt pattern. 45.5mm overall height. Made in Mexico. No returns if installed. Please review our business policies in our store for information regarding returns, shipping and warranties.