Mack CH/CL/CX 63QT516 Wiper Motor PAI 5456CROSS REFERENCE: 63QT521AM 63QT519 63QT516 63QT521M 63QT45M 20875361 APPLICATION: Mack CH CL CX BRAND: PAI 5456 Mack 63QT516 Wiper Motor PAI 5456 heavy duty truck parts and aftermarket truck parts. Ensures consistent wiper function and supports safe driving visibility. All components are proudly manufactured in the U. S. A. by PAI Industries Inc., an ISO9001 certified company with over 50 years of experience in the heavy duty truck parts industry.