Mack 85QM4199 Cab Step PAI 5741CROSS REFERENCE: 85QM4185 25164673 85QM4199 APPLICATION: Mack MR MB Multiple Use Application. DETAILS: Aluminum Cab Step BRAND: PAI 5741 Mack 85QM4199 Cab Step PAI 5741. Heavy truck parts and OEM replacement parts. Supports consistent load capacity and stabilizes driver entry function. 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