The Model Y Juniper adjusted the vent cover slightly from the previous (2021-2025) gen Model Ys.  With this, I modified a previous version to fit the newer version. 
Key Notes:
1) The Sides slot around the plastic of the vent.  But with Teslas build consistency, the vent may not be uniform depth.  Please consider if you want to print the extended "ext depth” or the standard “std depth” side parts (you may need to print 1 of each).
2) The Cover_Ext is close to the max width for my vents.  If these vents get smaller, it may be hard to mount.  Please consider if you want to print the extended "ext depth” or the standard “std depth” side parts.  I believe Std should work well.