looking for part #s on a donaldson air filter for a 1970 4905 8v71

[johnjem]

Does any 1 have these part #s handy! I went to there web site and i it showed me was the 1st and 2 fuel filter?

[TomC]

Try pulling the air filter element out-it will usually have the part number stamped on the end rubber.  Good Luck, TomC

[johnjem]

I still have the original air filter with the oil<lol>i am trying to due away with that and go with a paper air filter.

[larryh]

I went that route 3 years ago and never found a replacement unit so still have the oil bath

[Len Silva]

I have been searching for you because I know there was an article somewhere on the net several years ago.  I assume you have the four oil bath filters like on the 4106 (three on a 4104).

Someone did come up with a plan using the existing oil bath housing with some modification and paper filters.  You just have to find the right size filter yourself using the oil bath as a guide.

Alternatively, you could replace the entire assembly like this guy has done:
http://autos.groups.yahoo.com/group/gmc-busnuts/files/air%20filter%20swap/

Len