Hello, installed a derale remote trans cooler and the replacement filter listed by derale is a 13092. The picture of the filter on the site has the numbers PH253 printed on it. after some research I have gathered that the filter Ph253 is Manufactured by Champ, and is a cross for a AC PF-13 or a fram ph-43. Can anyone shed any light on this for me? The derale filter sells for 17.00 but if they are indeed a direct cross for a AC PF-13 I can pick them up for about 4.00 at wally! Thanks for any help, Mike