|Donaldson's passive-regeneration LNF Muffler is verified for use with select 1993- through 2003 modle- year on- road diesel engines.|
SEF Muffler – The Donaldson Semi-Active Electric Filter (SEF) Muffler System is verified for select 1991- through 2006-model-year diesel engines used in on-road applications. It is designed for fleet vehicles that return home every night and can be plugged into an electrical outlet for DPF regeneration.
LNF Muffler – The Donaldson Low-NO2 Filter (LNF) Muffler System is verified for use with select 1993- through 2003-model-year diesel engines used in on-road applications. It is a cost-effective diesel particulate filter for vehicles with sufficient duty cycles to permit passive regeneration.
Specific engine families and conditions for which the SEF and LNF Muffler Systems have been approved are in the Executive Order on the CARB webpage at: www.arb.ca.gov/diesel/verdev/verdev.htm.