Situated on top of the door these trim pieces act as a seal between your window and door keeping debris out but letting water drain through normally.
Miata door window replacement.
This repair is performed on a 1992 miatain the photographs and example below.
This is a typical miata door assembly.
Any of these problems the same door and window disassembly is required.
Later models may require a different method.
I did find ads for replacement back panels with a new plastic or glass window but those were also relatively expensive.
The original parts get cracked rusty and unsightly so replace the belt line molding on your miata for a refreshed factory look.
Mazda sells a replacement back window for 370 and that is just for the clear plastic part you then need to take it to a shop to have it installed.
A catalog sells replacement plastic back panels for 170 and glass back panels.
The inner panel shown is for a miata with manual windows.
It may not be necessary to remove the door panel to do an adequate job.
On the lower exterior is a single weatherstrippingwhich keeps water out of the door protecting interior components of the door from wind and weather and creating an aesthetic appearance at the lower edge of the window.
Note that not all miata s will have the same door panel some earlier models may not have the.