When cleaning out a clog I accidentally broke the coupler that attaches the bowden tube to the extruder on the Ender 3 Max, so I modelled a new one. After 3–4 iterations it came out pretty good. Insert the coupler into the extruder and then push the bowden tube into it until it clicks in. Lastly, put on the small blue clip that holds everything closed.
New version 2022-02-02
Updated the model to better allow for the bowden tube to slide in but not out. Please make sure to download it again, if you already did.
The author marked this model as their own original creation.