I buy oil filters by the case. And Engine oil by the barrel. Hate making many trip to the parts store. So for this last GMC oil change. I found that I was out of A/C filters. So I ended up with a Fram as an only choice that night. As I don't like how there made inside. After some calls today. Right now it seems that the only filter that fits. And is 5 inches long is the Wix 51049. Any other thoughts? Bob Dunahugh