The standard compartment locks are replaceable at your lock big box store - make sure you get the same length and latch, or move the latch from the old lock.
Seems like the slam latch and recent door latches are very standardized. RV Lock says theirs fit "most" trailers. You may need to do a little tweaking because of the high quality builds most units get...
I have heard Air Streamers may have issues.
Worst case - pull your unit over to a lock smith and have the existing cylinders re-keyed.
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S.E. Mich. Flagstaff 26FKWS / 2019 F-150 3.5 EcoBoost SCrew Propride