Mack/Volvo 20732758 Exhaust Seat PAI 845044 (Pack6)CROSS REFERENCE: 20732758 22946907 20509467 APPLICATION: Mack MP7 Volvo D11 Multiple Use Application. BRAND: PAI 845044 Mack Volvo 20732758 Exhaust Seat PAI 845044 featuring engine replacement and replacement engine parts. Provides stable exhaust seating with dependable service. 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