'78-96 Bronco Tailgate Lock Cylinders (F2TZ-9821984-A) w/ matching keys
https://www.npdlink.com/product/lock-cylinder-and-keys-tailgate/207568/80870SOLD the black one (F5TZ-9821984-BA)
TSB 99-24-02 Service PN: F6TZ-9821984-AA
I DO NOT KEEP SPARE KEYS or records of these locks. There's one key made for each lock, so copy it as soon as you receive it. I can't help you if you lose the key. As of 9/21, I have 9 used original t/g lock cylinders with keys, but 3 have cosmetic dents on the bezels. They all work perfectly.
New aftermarket 
![tglockcyls.jpg '78-96 Bronco Tailgate Lock Cylinders (F2TZ-9821984-A) w/ matching keys
https://www.npdlink.com/product/lock-cylinder-and-keys-tailgate/207568/80870
SOLD the black one (F5TZ-9821984-BA)
TSB 99-24-02 Service PN: F6TZ-9821984-AA
I DO NOT KEEP SPARE KEYS or records of these locks. There's one key made for each lock, so copy it as soon as you receive it. I can't help you if you lose the key. As of 9/21, I have 9 used original t/g lock cylinders with keys, but 3 have cosmetic dents on the bezels. They all work perfectly.
[url=http://www.supermotors.net/registry/media/401380][img]http://www.supermotors.net/getfile/401380/thumbnail/tailgatelockparts.jpg[/img][/url]
[url=https://www.npdlink.com/product/lock-cylinder-and-keys-tailgate-black-2-key/207568]New aftermarket[/url]](https://www.supermotors.net/getfile/768802/fullsize/tglockcyls.jpg)