That's for the engine oil cooler. I think this might be the correct part. I'm not sure if it's the same for a 2000 5.4.
https://www.ebay.com/itm/Lincoln-FORD-OEM-2002-Blackwood-5-4L-V8-Engine-Oil-Filter-Adapter-F75Z6881AA/231014465580?epid=1637176119&hash=item35c989002c:g:tHoAAOSwN2VZSD5Z
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