Western Star Engine Overview
Choice is a powerful thing.In this case, literally.
One size never fits when it comes to truck engines. So we offer a range of engine choices from both Detroit and Cummins. You can pick the right amount of power for your job. And like the other 3,600 options we offer, our engines are nothing short of the best. Efficiency. Toughness. Power. Talk about getting your motor running.
Detroit DD13
Ideally suited for less-than-truckload, regional distribution and vocational applications, the Detroit® DD13® engine offers the flexibility of multiple options for horsepower and torque, all in a package that provides a much improved fuel economy.
Detroit DD13 Gen 5
The DD13 Gen 5 engine offers the best of the best in cutting-edge diesel engine technology and engineering. It's been significantly redesigned with vocational jobs in mind, with numerous innovations to increase performance, durability and productivity.
Detroit DD15
The Detroit DD15® engine delivers more with less weight, powering the evolution of a new era in efficient driving. The DD15 is part of the Integrated Detroit Powertrain, 3 specifically-engineered Detroit components that improve efficiency, performance, and reliability.
Detroit DD15 Gen 5
Backed by years of proven performance, the Detroit DD15 Gen 5 takes reliability, durability and productivity to the next level. Perfect for any operation, vocational or on-highway, the DD15 delivers everything you need from an engine, including greater profitability.
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.
Cummins L9
Delivering an excellent power-to-weight ratio, along with the dependability and uptime you expect from Cummins, the L9 features a new piston design, optimized camshaft valve timing and reduced water pump speeds to minimize parasitic losses and increase fuel economy.
Cummins X12
The X12 is designed to give weight-sensitive applications maximum payload. And at just 2,050 lbs., the X12 is at least 150 lbs. lighter than the lightest competitive 11L engine, yet it still delivers powerful performance from 350-500 HP and 1250-1700 lb-ft Torque.
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. The Cummins X15 is Designed to handle the heavy lifting.
