Stihl filler cap spare part

A spare part, that breaks, if you inproperly close the filler cap - fuel tank cap, bayonet type. Original (whole filler cap) part number is 0000-350-0533, and is a bit pricy - here USD 8.50.

So I made this model, printed with PETG ("Nuclear orange", manufacturer Aurapol), layer 0.25mm, infill 100%, supports needed. In 3MF file for Bambu Studio is set PETG for main part and PLA for contact layer of support for easy separation. Assembled and it works. Here I must state, that design of original Stihl filler cap is the worst, as it is easy to misplace and then it breaks.

One more note: I have Stihl MS361 chainsaw, where it fits. Avoid filler caps from Aliexpress, they don't fit.

CZ:
A spare part for the fuel tank cap, which will crack if you improperly install the original cap and try to close it. The original part number (of the entire cap) that it fits is 0000-350-0533. I paid 189 CZK for the original cap. I did end up buying the original after all, just in case.

However, my original cap cracked the day before I urgently needed to do some cutting, and what was I to do. So I modeled this cap, fine-tuned it after several attempts, and it works great. It must be printed from PETG (for flexibility and chemical resistance), with a layer height of 0.25mm (a lower layer height equals less strength), 100% infill, and supports enabled. The Bambu Studio 3MF file is configured for PETG material for the main part and PLA for the contact layer of the supports, allowing for easy removal. I assembled it, and it works. I repeatedly opened and closed the cap, and it's fine. This part is under tensile stress.

The design of the original cap is perhaps the worst, and they even say so at the Stihl store. How glorious the old screw caps were. Well, once your original one cracks and you repair it with this part, you'll understand how it's made, and you'll know what to watch out for when closing it, so it won't crack again.

And one more note: don't buy caps on Aliexpress, according to comments they don't fit. I originally ordered a replacement cap from zatechservis.cz; they sell Chinese products there. The cap, of course, also didn't fit; it couldn't be twisted all the way so that the protrusion on the cap would fall into the recess in the chainsaw. So I returned it