2026 INTERNATIONAL HX 520, 3.90 RATIO, 230 WHEELBASE, AXLE, FRONT NON-DRIVING {Meritor MFS-13-143A} Wide Track, I-Beam Type, 13,200-lb Capacity, ENGINE, DIESEL {Cummins X15 500V} Productivity Series, EPA 2024, 500HP @ 1900 RPM, 1850 lb-ft Torque @ 900 RPM, 2000 RPM Governed Speed, 512 Peak HP (Max), TRANSMISSION, MANUAL {Eaton Endurant XD PRO EXDP-18F118D} 18-Speed Fully Automated Manual, Aluminum Clutch Housing, Overdrive, Mechatronic Shift Controls, Pneumatic Clutch Actuation, Internal Lube Oil Pump, Hill Start Aid, AXLE, REAR, TANDEM {Meritor MT-40-14X-5DCR-P} Single Reduction, 40,000-lb Capacity, with Lube Oil Pump, .5"(12.7mm) Wall Housing Thickness, Driver Controlled Locking Differential in Forward-Rear and Rear-Rear Axle, R Wheel Ends, DIFF. SWITCH CONTROLS Two Independent Switches for Control Traction Differentials on Tandem Rear Axles, Mounted on Dash, SRV CONT, EXT CUMMINS ENG/AFTR To 48-Month/400,000 Miles (640,000 km), Extended Cummins X15 Efficiency or Productivity Series, Full Engine and Aftertreatment Coverage.