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arbcombo -- Extension of the Donaldson SEF Muffler System

Posted: 12 Feb 2013 08:36:00
Verification of the Donaldson SEF Muffler System for On-Road

The Air Resources Board (ARB) modified the verification of the
Donaldson Semi-Active Electric Filter (SEF) Muffler System.  The
modifications include parts changes and changes to the scope of
the verification.  The SEF Muffler System employs a diesel
oxidation catalyst, heating element, and an un-catalyzed diesel
particulate filter with an Emissions Device Monitor Kit to
achieve an 85 percent reduction in particulate matter emissions,
qualifying it for Level 3 plus verification.  Specific engine
families and conditions for which the SEF Muffler System has been
approved along with the Executive Order will be available shortly
on ARBís website at: 


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