Executive order

D-420U-11

Engine Control Systems Ltd.

Vehicle applications

No vehicle applications were preserved for this order.

Part records

Part numberModel/specificationModificationRemarks
1996-2003 model-year off-road compression-ignition engines of 20.0 liters or less displacementThis exemption is only valid provided the engines meet the following operating condition: the engine exhaust temperature is between 280 and 325 degrees Celsius for at least 25 percent of the typical duty cycle. The Purifilters can be installed on engines operated using standard California diesel, ultra-low sulfur diesel, or PuriNOx water emulsion fuel based on standard California diesel or ultra-low sulfur diesel.