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Western Star Introduces All-new 47X


Western Star introduced the newest addition to its purpose-built vocational line-up, the all-new Western Star 47X. The truck complements the Western Star 49X to establish the Western Star X-Series and extend the platform’s reach into entirely new vocational applications.

With a standard 111.6-inch BBC, the 47X is suited to regions or applications that require a shorter overall vehicle length. Additionally, for those that need to meet federal or local bridge law requirements a 110.8-inch BBC is available. With the shorter hood and wheel cut up to 50 degrees, the 47X optimizes maneuverability for jobsites or congested environments.

“With the 47X and the 49X, we can offer our vocational customers different options that will give them the right tool for their specific job needs,” says David Carson, senior vice president, sales and marketing, Daimler Trucks North America (DTNA). “The vocational segment is a broad segment, covering many different applications, and our Western Star X-Series reflects that reality. Whether their work be heavy-haul, logging and timber operations, or construction, we have the right Star for our customers.”


The 47X is approximately 200-lbs lighter than the 49X in like-for-like spec. All X-Series trucks have tougher, yet lighter, single-channel frame rail options versus legacy products. The platform offers frame rails with RBM of up to 3.8 million inch-lbs to last longer and return greater payload. A new 9.5-millimeter single channel rail option is available and features comparable strength as today’s 11-millimeter rail. Standard high-strength aluminum forward, rear, and end-of-frame crossmembers further reduce mass, as does a new two-battery option.


The X-Series steel-reinforced aluminum cab reduces mass by up to 8% while offering greater driver comfort with more space. An optional two-person bench seat is available for a crew, and a new in-cab battery box affords additional operator legroom. An optional roof-mounted condenser offers maximum airflow through the radiator for stationary applications like construction and mining, keeping operators comfortable.

The 47X’s hood offers forward visibility of 24.8 ft, which is an 11-inch improvement over the 49X. Its composite construction and ISO Tech suspension system resists bending and cracking by absorbing and dissipating vibrations from road inputs.


The 47X comes standard with the Detroit DD13 Gen 5 engine, which features higher compression ratios and a new swirl piston design to further improve combustion and efficiency. For weight-sensitive applications, the Cummins L9 and X12 engines are available for the 47X.

The 47X is also offered with the all-new DT12-V transmission, which is built on the proven DT12 and has more than 35 million miles of vocational-specific testing. The DT12 includes three work-ready mode applications: Rock-free mode, Off-road mode, and Paver mode for the challenges of specific vocational applications.

The all-new 47X is available for order now and delivery to customers begins in early 2022.

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