Fit to:209657 Race Pro Radiators 26″ x 16″ Chevy/GM 3-Row of tubes Core Racing Design Core Size : 20.47″ * 15.16″ *2.20″ Overall Size : 25.55″ *16.46″ Inlet Diameter: 1.5” Outlet Diameter: 1.73” ROW NO: 3Row Warranty: 1 Year 100% TIG welded.