"There’s no replacement for displacement.” That’s an old hot-rodders’ saying, and truckers use it, too. All other things being equal, a larger engine will outperform a smaller one. But things aren’t ...

The Paccar TX-12 Pro automated transmission is now available with the Paccar MX-13 engine for Kenworth’s T680, T880, and W990 models. This transmission is designed to optimize performance for both on- ...

Peterbilt Motors Co. announced that a California-compliant version of the Paccar MX-13 diesel engine is now available in its Model 579, Model 567 and Model 589 trucks. The engine is compliant with ...

New and Only CARB-Compliant Fully Automatic Transmission and Diesel Engine Pairing to Deliver Lower Emissions While Maintaining Optimized Performance for Heavy-Duty Vehicles INDIANAPOLIS, July 30, ...

Peterbilt Motors Company announced Tuesday its availability of a new lightweight engine designed for endurance, quieter performance and fuel efficiency. The PACCAR MX-11 engine is available on the ...

If you're in the logistics and transportation sector, or just a semi-truck enthusiast in general, then you're likely familiar with PACCAR engines. They come in three heavy-duty models: EPA MX-13, CARB ...