Caterpillar - Cat

Tier IV Interim Engines

The Cat C3.4B, C4.4 ACERT and C6.6 ACERT Tier IV Interim/Stage IIIB industrial engines offer ratings from 60 to 174 hp with maximum torque ratings from 310 to 609 lb.-ft.

  • Produce fuel consumption improvements across the entire horsepower band
  • ACERT Technologies achieve a 90% reduction of particulate matter and a 45% reduction of oxides of Nitrogen (NOx)
  • C4.4 ACERT 4.4-liter, four-cylinder platform features a 22% power increase and comes with a single (intercooled) or series turbocharger
  • Available with a range of options suited for compact and mid-range equipment

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