2026 Western Star 49X

Application fitment centers on dump and aggregate duty, low mileage and new condition point to early-life service with minimal wear-in. Tri-axle layout with a 20k front and 46k rears targets heavier payloads and better stability under uneven loading, spring suspension favors durability and predictable articulation on rough surfaces over ride comfort. Powertrain pairing uses a Cummins X15 rated at 525 hp tied to an Allison RDS 6-speed automatic, a combination that prioritizes consistent launch control, smooth low-speed modulation, and reduced driver workload in stop-and-go cycles. Automatic gearing suits jobsite maneuvering and short-haul runs where frequent starts, backing, and grade work are common. Frame and running gear present as steel construction with a 228-inch wheelbase, a practical middle ground for dump body packaging and turning radius. Wheels show aluminum spec, helpful for corrosion resistance and service access, while the tri-axle configuration adds tire, brake, and bushing count to the maintenance plan. Cab layout notes left-hand drive and a red exterior, with identification tracked by serial 5KKMBWFG3TLWG3823 and stock 316069. ECM data is not provided, so verification of engine hours, idle percentage, and any logged events would be the next step before assigning a duty-cycle history.