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 ...

Peterbilt announced the new MX-13 is available for order in its Models 579, 567, and 589 trucks. Kenworth announced that the new CARB-compliant engine is now available to order on its T680, T880, and ...

Kenworth and Peterbilt trucks will offer the 13L and 11L engines with up to 510 hp and 430 hp, and B10 life of one million miles Paccar is launching new power, torque and fuel efficiency enhancements ...

Peterbilt said the new MX-13 version meets the CARB Omnibus Regulation and features redesigns of internal hardware and the aftertreatment system to effectively reduce NOx emissions. The larger volume ...