Will The Stealth Hitch 391TES317 Fit A 2026 Tesla Model 3?  

It fit my 2025 Model 3 perfectly. Removing and reinstalling the bumper is the hard part.

You may be ok unless you have a 2026 performance model 3 (highland 2024-current). My old hitch from my 2023 model 3 did not fit my highland performance model 3 due to the changes to the bumper. Even with the correct hitch I had to modify the tow hook socket. The correct hitch works great.

I installed the 391TES317 on my 2024 Model 3 highland. It fit nicely. I use the hitch for a bike rack and cargo shelf, and love it. I do not know if there are changes from 2024 to 2026 that effect this. I omitted the oem Alum crash bar during install of the hitch. I did not realize I was loosing the tow hook till it was too late for me. If I ever go back into the bumper cover, I will carefully remove the tow hook bracket and mounting plate from the oem crash-bar, which I saved in may garage, cutting it down to just the minimal amount of metal, and install the tow-hook thread bracket behind the Stealth Hitch. However, I have NOT installed the 2024 WIRING KIT because I think it needs work. The cars rear light wiring changed significantly from 2023 to 2024. 2024 has the lights and new connections in the trunk lid. The trunk lid hinge and prop assembly makes the install very difficult, and I do not like the crimp in type connectors into very fine wires with virtually no space the work the connections, and virtually no space to pack them into. I have not checked recently on any lessons learned for the wiring harness. eTrailer volunteered to do the install for me (somewhat as a prototype, if I get the car down to them. I still hope to do that some time.

I installed the hitch on my 2025 M3P. You can see my previous comment and photos of how I modified the bracket and crash bumper in order to keep the tow hook mount. I'd recommend getting the post-2024 updated installation instructions from etrailer - they were flawless! I think etrailer knows tesla better than tesla.