Paccar MX-13 1993509 Flywheel PAI 704031CROSS REFERENCE: 1993509PE 1993509 APPLICATION: Paccar MX 13 Peterbilt Multiple Use Application. BRAND: PAI 704031 Paccar MX 13 1993509 Flywheel PAI 704031. Truck repair parts and heavy truck parts. Supports power transfer and maintains stable engine rotation. 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. This part is