PACCAR MX-11 Overview

2017 PACCAR MX-11 EngineHeavy-Duty
Class 8

1 Million Miles
B10 Design Life

2 Years or 250,000 Miles
Base Warranty


lb-ft of Torque

10.8 Liters

Spec Sheet


Reliability & Durability


Fuel Efficiency

High Power to Weight Ratio

Our engine design offers significant weight benefits and outstanding power and torque. The bottom line - an engine with an impressive power to weight ratio and low fuel consumption.

High Power to Weight Ratio

Lightweight Materials

CGI is 75% stronger and stiffer than gray cast iron. This means CGI allows for reduced wall thickness without compromising strength and optimizes the stiffness of the block and head. The result is a lighter, stronger cylinder head and block.

Dual Overhead Camshaft

Provides precise control of the valves with a weight optimized assembled camshaft design.

Low Emissions

High pressure fuel injection and sophisticated calibration deliver excellent fuel economy and low emissions.

Low Emissions

Component Optimization

The PACCAR MX-11 engine is optimized with powertrain components and is precisely calibrated to maximize fuel economy.

36,000 PSI Graphic

36,000 PSI Fuel Injection System

Improved combustion control and reduced emissions, delivering best in class fuel economy at a reduced weight.

Integral Engine Brake

A unique, cam actuated design offers strong, quiet, and reliable braking performance with a low overall engine height.



Engineering a quieter, smoother ride

  • Rigid CGI Head and Block
  • Precise, High Pressure Common Rail Fuel Injection
  • Dual Overhead Camshaft
  • Floating Oil Pan Design
  • Rear Gear Train Location
  • Integrated Harmonic Balancing



MX-11 Ratings

Peak Power (HP)
Peak Torque (LB-FT) @ RPM
1,650 @ 900
430 MT
1,450/1,650 @ 900*
1,550 @ 900
1,450 @ 900
1,350 @ 900
1,250 @ 900
1,150 @ 900
*Multi Torque Rating
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