I just put two #46184 filters in my converted oil bath housings. I went on e-bay and found a dealer selling two for $24 + free shipping, not a bad deal since I needed two anyway. I like the slightly shorter look, if you want OEM hight, look at the #42157. Both filters fit the '47-'53 oil bath truck air cleaners just like Matt shows in his links above.
These are good thick filters made for V6 motors, not lawn equipment, so they should last a really long time.
Joe
