The Tier III PowerTech Plus Industrial Engines feature cooled exhaust gas recirculation, a variable geometry turbocharger, power bulge, four-valve cylinder heads and a high-pressure common rail fuel system.
- 4045 4.5L, four-cylinder engine offers power ratings from 149 to 173 hp
- 6068 6.8L, six-cylinder engine provides ratings from 180 to 275 hp
- 6090 9.0L, six-cylinder engine is rated from 225 to 400 hp
- 6135 13.5L, six-cylinder engine is rated from 350 to 600 hp