Accepted Answer

I cannot tell you why a manufacturer would list a cabin filter for that model year; perhaps a filter manufacturer mistakenly assumes that all navigators came with them. We run into this occasionally here in our shop also; filters will be available for a certain model, including years that did not have them. Here is a direct quote from the service manual for the 2000 model year Navigator: "The air distribution system of this vehicle cannot be equipped with a cabin air filter" I checked our parts catalog listings; the only mention I found was an AC_Delco one, with a footnote that says "dealer installed option". So, the Ford service information says that a filter cannot be installed, but the Delco listing seems to say that some sort of aftermarket filter system may have been available as an add-on accessory after the vehicle was built and had left the factory. If you think yours may have some sort of add-on aftermarket filter system, the place to look for it would be behind the glove box area, attached to the heater case under the dash on the passenger side..

Edited by Steve7654 on 10/27/2009 at 9:45 PM

Expert:	Steve7654
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Answered:	10/27/2009

Auto Service Technician

25+ yrs experience as a professional working technician; ASE L1 master technician