Approval Details

Valid E.O.


This Executive Order approved the specified parts on on January 6, 2004.
As of Sunday, July 21st, 2024 this Executive Order has not been overturned or superceeded.

Approved Parts

1991-2002 Caterpillar 3208, 3116, 3126, 3306, 3406, C10, C12, C15, C16 (all hp). This exemption applies to 1991-2002 4-stroke heavy-duty diesel engines originally certified to meet a particulate matter emission standard of 0.10 g/bhp-hr or lower.This exemption is only valid provided the engines meet the following operating conditions: (1) the engine exhaust temperature is greater than or equal to 210 degrees Celsius for 40 percent of the typical duty cycle, (2) the NOx to PM ratio is at least 8, and (3) the engine is operated using diesel fuel with a maximum sulfur content of 50 ppmw.

This Executive Order may be listed as:
  • C.A.R.B.E.O. D-393-11
  • Executive Order 393-11 / D393-11
  • ARB # D-393-11
  • Executive Order No: D-393-11
  • C.A.R.B. No. D-393-11
  • Resolution D-393-11
For Free CARB Executive Order Status verification, email an image of the device Executive Order label as well as the Year/Make/Model and Test Group # of the vehicle to [email protected]

Download: Executive Order D-393-11 PDF

D-393-11 Document:

Current View

Previous E.O. D-393-10 | Previous E.O. D-392 | Next E.O. D-393-12 | Next E.O. D-394