The industry leading heavy-duty truck for durability, safety, and getting the job done.
The Western Star 49X isn’t just another truck pulling into a jobsite – it’s a statement. A statement of strength, of durability, and of expertise.
Engineered for the heaviest loads and harshest environments, the 49X delivers uncompromising durability and power for Class 8 vocational applications. Every component is crafted to withstand extreme conditions, while advanced technology and operator-focused design ensure you can tackle any job with confidence. When the work demands more, the 49X is ready.
The 49X features a heavy-duty vocational frame, engineered and built from the ground up to meet the demands of severe applications while still being lighter weight, more durable, easier to service, and extremely Truck Equipment Manufacturer (TEM) friendly.
That means, from the start, you’ll have a truck that can handle more payload and deliver greater uptime for improved profitability.
Confidence meets comfort from Arctic ice roads to sweltering Texas oil fields.
Pushes the limits of jobsite performance and payload.
A world-class solution for excavation and industrial clean-up.
Built for operators who need serious pulling power, the optional Power Hood on the Western Star 49X is purpose-built to support larger radiator packaging for high-output engines, including DD15 and DD16. By accommodating the increased cooling demands of applications that require the highest gross combined weight limits, it delivers the performance needed for heavy-haul, oil field, and severe-duty use cases—while maintaining the classic Western Star hood design.
The heavy-duty vocational frame underneath the 49X is engineered to stand up to the demands of severe service applications while being lighter weight, more durable, easier to service and extremely Truck Equipment Manufacturer (TEM) friendly.
Give your 49X the power and dependability you count on from leading engine, transmission and axle manufacturers, including Detroit… a name renowned for powertrain components that work together seamlessly for unmatched performance.
Whether your 49X is going to be working on construction sites, in quarries, or in the deep forest, your powertrain gives you the proven torque and hauling power to get payloads moving quickly with longer maintenance intervals and maximized uptime.
The 49X interior features all the comforts that make the long days a little bit easier. The spaciousness creates an inviting environment while the insulation, fit, and finish improves both sound levels and temperature control. And the ergonomic design puts control and critical information within reach, making every job more manageable.
Tight and unpredictable work zones. Jobsite blind spots and visibility issues. Equipment and crew constantly on the move all around you. You’ve got this! You’ve got Detroit Assurance built in your 49X. It’s the most advanced suite of active safety systems ever offered to the vocational market. Detroit Assurance not only works to protect people and property, it helps you reduce the repair and operational costs of having a truck out of service by mitigating collisions — which can mean game-changing productivity to you.
The X-Series was created with TEMs in mind. We designed the truck to ease body upfit for every type of truck, including dump trucks, cement mixers, and cranes, and engineered it with features to make it fast and simple to access wiring and add controls. Straight frame sections begin directly behind the cab and feature a constant flange-to-flange dimension, making upfit easier.
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