Availability: 6 in stock
The back panel here is the FORD part, numbered ml3z1523706aa.
Varies by build: Regular cab, side & rear trim.
A cap that vents and a cap that does not are visually similar, and swapping them gives a fault code or a pressure leak rather than a fit problem.
Confirm the number before you order, because a near match will bolt on and still be wrong. Send the VIN if the old marking has gone.