Facts About PACCAR MX Engines

The 12.9-liter PACCAR MX-13 engine is characterized by its combination of proven technologies and state-of-the-art innovations that improve fuel economy. Power offerings are expanded with the addition of a 500 horsepower rating with 1,850 lb-ft of torque. The new PACCAR MX-13 engine’s common rail system maintains injection pressures of 2,500 bar, which helps achieve the lowest possible fuel consumption, emission and noise levels. The PACCAR MX-13 engine is designed to meet the demands of both linehaul and vocational heavy-duty truck applications.

Torque Ratings

Engine HP	Peak Torque LB-FT @ RPM
380	1,450 @ 1,000
405 405	1,450 @ 1,000      1,550/1,750 @ 1,000*
430 430	1,550 @ 1,000      1,550/1,750 @ 1,000*
455 455	1,650 @ 1,000      1,550/1,750 @ 1,000*
485	1,650 @ 1,000
500	1,850 @ 1,100

*Multi Torque Rating

Maintenance Intervals

Maintenance Item	Miles	Kilometers
Fuel Filter       Vocational Duty      Standard Duty	25,000  40,000	40,000 64,000
Oil and Filter      Vocational Duty      Std. Duty > 20% Idle Time        Std. Duty < 20% Idle Time	25,000   40,000   60,000	40,000  64,000  96,000
Coolant Filter (If Equipped)	160,000	256,000
DEF Filter	300,000	480,000