Mack/Volvo 21482601 Exhaust Manifold Gasket PAI 831020 (Pack6)CROSS REFERENCE: 20984451 21394765 21482601 8148172 7421482601 APPLICATION: Mack MP7 Volvo D11 Multiple Use Application. BRAND: PAI 831020 Mack Volvo 21482601 Exhaust Manifold Gasket PAI 831020 intended for diesel performance parts and USA truck parts. Ensures stable exhaust flow and lasting seal. 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