The DD13 ® engine builds upon Detroit’s industry-leading heavy-duty engine legacy and proven technologies to bring efficiency and performance to the next level.

The DD13 takes the reputation of the DD15 to new heights. The DD13 engine builds upon proven Detroit ® technology to offer industry-leading power and productivity in this 6-cylinder engine.

The Detroit DD13 engine is one of the most commonly used medium-duty engines in commercial trucking today. Known for its efficiency, modern design, and adaptability, the DD13 plays a key …

Tailored specifically for LTL, regional distribution, and vocational, the DD13 uses the latest in diesel engine technology to create a fuel-saving 12.8-liter workhorse.

DD13® VOCATIONAL TECHNICAL SPECS UNMATCHED VERSATILITY AND STRENGTH. FROM CUTTING-EDGE DIESEL ENGINE TECHNOLOGY TO EXPERT ENGINEERING AND …

The Detroit DD13 is a 12.8L inline-6 delivering 370-525 HP and 1,250-1,850 lb-ft of torque, offering the ideal mix of power, fuel efficiency, and durability for regional haul, vocational, and …

Complete with a swirl piston design, ultra high compression ratios and a new, 10-pin injector, the DD13 Gen 5 creates better combustion, reduces ash production and improves fuel economy …

Ideally suited for local delivery, distribution, and regional haulage applications, the Detroit DD13 engine offers the flexibility of multiple options for horsepower and torque, all in a package that …

Designed specifically for Less-Than-Truckload, Regional Distribution and Vocational applications, the DD13™delivers a smooth, quiet ride and up to 5% better fuel economy.*

WE’VE MADE SEVERAL IMPROVEMENTS TO THE DD13, INCLUDING: An optional variable-speed water pump [A] controls flow, based on engine speed and coolant temperature for …