Correct Replacement Oil Filter


This oil filter adapter and filter are on my 1951 Super that I just purchased.  Can anyone tell me anything about it? Filter adapter kits I see from the current parts suppliers online appear to be different than this?  Are filters available for this type that I have?  I haven't taken it off yet and don't want to purchase just any filter worrying about it being equipped with a drain-back check valve that could block oil flow.  I would appreciate any input.

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