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Verification of the Donaldson LXF System for On-Road
Applications. 

The Air Resources Board (ARB) has completed an extension to the
verification of the   Donaldson Low NOx (LXF) Muffler System for
select 2002 through 2006 model year diesel engines used in
on-road applications.  All of these engines are four-stroke,
turbocharged, and have certified oxides of nitrogen emissions
less than 3.0 grams per brake horsepower-hour (g/bhp-hr), as well
as were certified in California to the 0.1 g/bhp-hr particulate
matter (PM) emission standard when new.  The LXF System employs a
catalyzed pre-filter and a catalyzed diesel particulate filter
with a back pressure monitor to achieve an 85 percent reduction
in PM emissions, qualifying it for Level 3 plus verification. 
Specific engine families and conditions for which the LXF System
has been approved may be found in the Executive Order which will
be posted within ten days on ARB website at: 
http://www.arb.ca.gov/diesel/verdev/verdev.htm. 

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