Donaldson Company receives approval from California ARB

Donaldson Company received Level 3 Plus conditional verification by the California Air Resources Board on October 11, 2011, for the Donaldson Non Road Low NO2 Filter (NR-LNF Muffler), an off-road emissions retrofit device.

The approval applies to off-road engines produced from 1996 to 2010 with power ranges from 100 to 600 Hp.

For more information about specific engine families and conditions for which the NR-LNF Muffler has been approved, visit