Caterpillar receives Tier 4 certification
Lauren Heartsill Dowdle | August 19, 2010

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.

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