Brake Rotor Specifications - Position: Front Driver Side and Passenger Side. Rotor Type: Vented. Outside Dia: 12.64 in. Hub Holes Centering Dia: 2.65 in. Mounting Bolt Hole Quantity: 5. Bolt Circle Dia: 4.72 in. Bolt Dia: 0.64 in Fitment - Fits Models w/12.64 inch (321mm) Front Rotor Outside Diameter ONLY. Replacement for 2010-2017 Chevrolet Equinox - [2014-2016 Chevrolet Impala (New Body Style)] - 2017-2020 Chevrolet Impala - [2010-2017 GMC Terrain] - 2013-2015 Chevrolet Malibu/2016 Chevrolet Malibu Limited - [2010 Buick Allure] - 2010-2016 Buick Lacrosse (2011 & 2015 Models w/321mm Front Rotors or 17" Wheels; 2016: Brake Code J61) Fitment - Replacement for 2011-2012 Buick Regal (Will NOT Fit Brembo Models) - [2013 Buick Regal (Base, Premium; Single Piston Caliper; Will NOT Fit Brembo Models)] - 2014 Buick Regal (Base, Premium; Will NOT Fit Brembo Models) - [2015-2016 Buick Regal (2015: Base; Will NOT Fit Brembo Models)] - 2017 Buick Regal (for Vehicles with Single Piston Front Calipers and 12.64 inch (321mm) Front Rotors ONLY) - [2011 Saab 9-5 (w/ 321mm Diameter Rotor (w/ Performance Brakes))] Interchange - Brake rotors: 55174, 13502214, 13501320, 13501297, 09A97111, PRT5973, 580746, 12062120. Brake pads: 1421, MGD1421CH, CFC1421, SBC1421, FVC1421 Package Details - 2x Front Vented Brakes Rotors - 55174; 2x Front Ceramic Brake Pads with hardware - 1421 Warranty - Brake Rotors: 10-Year Warranty; Brake Pads: 9-Month Warranty Autoclub 55174 1421 12.64 in (321mm) Front Brake Kit for Buick Allure LaCrosse Regal, for Chevy Impala Equinox Malibu Limited, GMC Terrain, Saab 9-5 Brakes Rotors and Ceramic Pads Replacement Vented