Could not find these any longer so created them in Fusion and printed them out in TPU98. Seems to be working fine so far, and if they do fail I will just put in some new ones :)
I printed them flat so the filament would be pulled in a way that it would be less likely to separate from the stress from vibration from the diesel.
You should install them with one edge first and then push the other side in with a screwdriver.
My print settings - .4 nozzle - .15mm height and polymaker TPU 98A, 5 walls
The author marked this model as their own original creation.