Coolant Reservoir Cap for 4AGE Toyota MR2 AW11 MK1 non-supercharged. These Caps are hard to find these days. Here you only need your oem tubes and a 2mm rubber...Show more plate which you have to cut to a 40,5mm diameter.
Best is to make it out of resin, fill 100%
I will not be liable for any consequential damages.
The quality depends on your choosen manufacturer. I tested it more than 100km and it works well.