2002 I35 Oil leak

[AZ Infiniti]

This my first post here. I did several searches on this topic and found nothing specific to my problem. Hope you can help. My car is a 2002 Infiniti I35 with 142,000 miles. Runs like new with no problems except a small oil drip. It's coming from the back side of the oil filter plate, not at the filter but at the back. Is there a gasket that's bad? I took the oil filter off and checked the tightness of of the nut that holds all of it together and seemed tight enough, didn't want to overtighten. Any thoughts or part numbers for a gasket in that area. Thanks

[maxhopper]

There is a gasket behind the oil cooler fitting.

[AZ Infiniti]

Thank you very much for your help. I'll try that gasket first as it seems like the most obvious.

[AZ Infiniti]

No more oil leak!! The Nissan part # for the gasket is B1304-43U00 and costs a whole $3.27. Thanks again.