Quote:

I have one that is 21 1/2" x 16 1/4" x 3". I haven't been able to find out what it fits.

Here is a comparison between this filter and a 6-Pak Shaker filter.



The large air filter fits this cowl induction air cleaner that was used on the hemi engine, mainly used on the ARCA speedways, back in the day.

RF-4C Phantom 69-370 Zweibrucken, Germany