California Air Resources Board

Note: Verifications are issued chronologically. The most recently issued Executive Order or individual attachment is the one which is currently in effect and is listed below each manufacturer’s verification. The most recent Executive Order supersedes any previous Executive Orders for the same product. Should you wish to view any previous Executive Orders or attachments for reference purposes related to a manufacturer’s verification, please view the associated link below each description.

CARB has verified the Johnson Matthey Advanced Catalyzed Continuously Regenerating Technology (AdvCCRT^TM) system for select 2002 through 2006 model year heavy-duty diesel engines used in on-road applications to include applications with an average temperature profile greater than 230 degrees Celsius for 40 percent of the operating cycle. The extension includes engines with displacements up to 16 liters and power ratings up to 600 horsepower. The AdvCCRT^TM system reduces emissions of diesel particulate matter by at least 85 percent and is designated as a Level 3 Plus system. The primary components of the AdvCCRT^TM include a diesel oxidation catalyst, a catalyzed diesel particulate filter, a diesel fuel injection system, a nitrogen dioxide decomposition catalyst, and a back pressure monitor. Specific engine families and conditions for which the AdvCCRT^TM system has been approved may be found in the Executive Order below.

Superseded Executive Orders