Against my better judgement
I attempted to use a Purolator air filter I bought on sale before the oil filter debacle. I figured they're easy enough to check so why not. I removed the OE filter from my 08 Liberty and tried to put the Purolator in. It fits but has a slight bulge [it lays flat on a table] and doesn't lay flat in the housing because it's too big. The only way to get it in is force the clamps shut on it which I won't do. I sized it up to the OE Mann filter and see it's about 1/16th+ of an inch too big. Just enough to cause an issue. I reconfirmed the part # and it's correct. I tried another and have the same problem. I'll try a Fram tomorrow, otherwise I'll have to buy a Mann filter. What a hack!