Validity
This Executive Order approved the specified parts on on October 22, 2002.
As of Monday, October 7th, 2024 this Executive Order has not been overturned or superceeded.
This Executive Order approved the specified parts on on October 22, 2002.
As of Monday, October 7th, 2024 this Executive Order has not been overturned or superceeded.
Models | Modification |
---|---|
1991-2002 model-year 4-stroke heavy-duty diesel and diesel/natural gas bi-fuel engines with horsepower ratings less than 600. This exemption excludes any engines equipped with an oxidation catalyst, diesel particulate filter, or an exhaust gas recirculation system. | The system includes a urea injection system, an SCR catalyst, and control sensors. |