Tier 4 Interim/Stage IIIB Engines

Caterpillar Inc. introduces the Cat C3.4B, C4.4 ACERT and C6.6 ACERT, the three latest additions to the Cat Tier 4 Interim/Stage IIIB technology industrial engine line up

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Caterpillar Inc. introduces the Cat C3.4B, C4.4 ACERT and C6.6 ACERT, the three latest additions to the Cat Tier 4 Interim/Stage IIIB technology industrial engine line up.

  • C3.4B offers ratings from 60 to 115 bhp, high torque up to 310 lb.-ft. common rail fuel injection system, smart waste-gated turbocharger, aftercooler 
  • C4.4 ACERT provides 80 to 174 bhp, 4.4 liter, four-cylinder, 22% increase in power to 174 hp, single or series turbocharger, torque up to 553 lb.-ft.
  • C6.6 ACERT is a 6.6 liter platform delivering 120 to 174 bhp, peak torque of up to 609 lb.-ft. at low engine speedA vent that will fit your tank to help you meet EPA requirements


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