Mack 454GC5244 Camshaft PAI 891919OEMCROSS REFERENCE: 454GC4268 454GC5244 25130245 APPLICATION: Mack Aset Multiple Use Application. DETAILS: Genuine Part BRAND: PAI 891919OEM Mack 454GC5244 Camshaft PAI 891919OEM. Commercial parts and heavy duty truck parts. Supports precise valve timing and maintains reliable camshaft operation. 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