I'm needing to replace the lock on my 2008 Ford Tonnesu Cover. It is a hard cover and folds in half. Where can I find this?

Did you try asking Google?

Please clarify what you are asking. The tonneau cover has 4 latches: two at the rear close to the tailgate and two at the front. Each one is actuated by inserting the ignition key into the rubber weather protective cover for the tumblers. The turning of the key rotates the cable mechanism that releases each of it's two latches. If the cables are seized or the tabs are broken or the latches are seized the cover will not unlatch. You would have to access the latches from inside the bed and diagnose what is going on. However, if your question is "Where can I buy a new lock or latch or cable, I bought mine (cable assembly for rear latches) at our local dealer. I removed the latches and lubricated them with white grease. The cable assemblies can be pried straight off of the tumblers. They are a friction fit. I hope that this helps you. Good Luck.

took 2004 sports trac to ford and they wanted around $300 to replace tonneau locks..went online and found to use gumout carburetor cleaner so poured about 1/2 a tsp in it and turns easily said to use dry graphite in... so will have to get some.. So I am 72 year old female and I fixed it..wahoooo