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 Engine Control Systems (hereafter referred to as CDTi) Purifilter^TM H for specific 1993 through 2006 model year California certified diesel engines, and specific 1994-2006 model year Federal certified diesel engines, used with on-road applications operating on CARB diesel or biodiesel (B20). All of these engines are four-stroke, medium and heavy heavy-duty diesel engines, including turbo-charged or naturally aspirated, mechanically or electronically injected, and are not equipped with exhaust gas recirculation. The Executive Orders include restrictions for these verifications and a list of applications and engine families for which the device has been approved and can be found here.

Superseded Executive Orders