Caterpillar’s C9.3 ACERT engine received the United States Environmental Protection Agency’s Tier 4 emissions certification and European Union emissions type approval.

The C9.3 ACERT is the first Caterpillar non-road engine to receive emissions certification in the 130- to 560-kW power category. This engine will power Cat products like mid-range track type tractors, motor graders and hydraulic excavators.

By the time Tier 4 Interim/Stage IIIB products reach customers, the Caterpillar Tier 4 validation program will have accumulated nearly one million hours of operation – making it the most extensive validation effort in Caterpillar history.