The EPA engine family
name is a 12 character number/letter designation included on the engine
nameplate for all heavy duty truck engines sold in the United States. In
general, the nameplate is permanently affixed to the engine. The exact location
and appearance of the nameplate varies by engine manufacturer. Examples of nameplates
from three major engine manufacturers are included below.
Cummins Engine Example
Detroit Diesel Engine
This program is made possible by the United States Environmental Protection Agency, the Maryland Port Administration and the Maryland Environmental Service
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