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Western Star 49X

Break New Ground with the All-New 49X

Introducing what isn’t just the best truck we’ve ever built, but what might be the best truck anyone has ever built. The all-new 49X was built from the ground up to bring toughness into the modern age with an impressive collection of engineering, technology and more than half a century of experience building trucks that take on any challenge, anywhere. So, whether you need a rugged vocational truck or a semi truck, and whether you’ve owned Western Star for years or will for the first time, it’s time to break new ground with the all-new 49X.

Crane
Crane
Crane
Crane

Western Star 49X Engines

Detroit DD15 Gen 5

Detroit DD15 Gen 5

Backed by years of proven performance, the new Detroit DD15 Gen 5 takes efficiency, reliability and durability to the next level. Perfect for any work site operation or off-road conditions, the DD15 delivers everything you need from an engine, including greater profitability.

Horsepower400-505HP
Torque Range1,550-1,850lb-ft.
Displacement14.8L

Detroit DD16

Detroit DD16

The biggest, toughest and most powerful engine Detroit has ever produced, the DD16® is the only 16-liter engine available. And since it offers the longest service intervals in the industry, it tackles your hardest jobs while increasing uptime and profitability.

Horsepower500-600HP
Torque Range1,850-2,050lb-ft.
Displacement15.6L

Cummins X12

Cummins X12

At just 2,050 pounds, the X12 is 600 pounds lighter than its predecessor, offering the highest power-to-weight ratio of any heavy-duty engine from 10 liters to 16 liters.

Horsepower350-500HP
Torque Range1,250-1,700lb-ft.
Displacement11.8L

Cummins X15

Cummins X15

With power and productivity, the Cummins X15 offers all-around performance with features like superior fuel and lube filter capacity that offer longer service intervals to optimize operational costs.

Horsepower400-605HP
Torque Range1,450-2,050lb-ft.
Displacement14.9L

Western Star 49X Transmissions

Detroit DT12-V

Detroit DT12-V
Automated Manual
Vocational Transmission
Torque up to 2,250lb-ft.
GCW 160,000lbs.
rear pto Yes
side pto Yes

Detroit DT12-VX

Detroit DT12-VX
Automated Manual
Vocational Transmission
Torque up to 2,500lb-ft.
GCW 330,000lbs.*
rear pto Yes
side pto Yes

Eaton Fuller

Eaton Fuller
Manual and Automated
Manual Transmissions
Torque 1,650-2,250lb-ft.
GCW 170,000lbs.**
rear pto Yes
side pto Yes

Allison

Allison
Automatic
Transmissions
Torque 1,650-1,850lb-ft.
GCW 170,000lbs.**
rear pto Yes
side pto Yes

*Application approval required over 160,000 lbs.
**Application approval required over 170,000 lbs