EucB30
Member
I think that the PH3985 has a relief valve inside the filter and the others do not............not sure on the K&N HP2007 though. Will do some research. I think the original will have that relief valve. Do you happen to know?
Donaldson Part # P552007 has the valve - P550173 does not. They interchange to the numbers you show. Will put the Donaldson name for quality up against any of the ones you have listed and can easily beat the $ 8.00 price if interested.
Ken Botsch
www.earthmoverssupply.com
Donaldson Part # P552007 has the valve - P550173 does not. They interchange to the numbers you show. Will put the Donaldson name for quality up against any of the ones you have listed and can easily beat the $ 8.00 price if interested.
Ken Botsch
www.earthmoverssupply.com