Trunk Cargo Block

The OEM cargo block holder thing that came with my car has been heavily utilized by me but I wanted more. Using the OEM cargo block holder as an influence, I have created my own that prints in two separate pieces. I have tested this out for about 3 months and it works just as well as the OEM one.

Print Instructions: The one pictured was printed in PETG-CF with the grippers being printed in TPU. I recommend using at least 3 walls and 10% infill. Print the Cargo Block on it's side as shown in the image with supports mirroring what's also shown in the reference image.

Areas of improvement: I had to reduce the area of the grippers as my first version did not fit in the cargo block so there is about 2-3mm of play forward and aft after the grippers are inserted into the bottom of the cargo block. They should stay in place on their own but I for my own peace of mind used a few drops of hot glue but you can use whatever 3d-printing friendly glue you'd like if you choose to do so.

As I know some people will say "you shouldn't use PETG in a car as a car can get very hot..blablahblah" but my philosophy on how PETG is okay for this is that a car gets it's hottest when it's just sitting unoccupied. There's not going to be any load on the cargo blocks and they will just be supporting themselves; not the cargo. When you get in the car and driving around (which in turn applies load to the cargo blocks), your car will be cooling down dramatically since you'll have the windows open or the AC on.

EDIT Feb 17th, 2026:

I had added a Velcro-Friendly version that removes the spot to put the TPU insert so you can use Velcro instead if you so desire. I have not tested it out myself but I don't see why it won't work.