The page below will allow you to change/improve parts of your car.
You will see the state of the parts already fitted on your car (1) and the list of
compatible parts not on sale you own (2).
Note : You will also notice that some cars have a turbo and others have a compressor, which are two completely different parts. It is therefore impossible to replace a compressor with a turbo, or vice versa. In addition, you can't fit an American part to an European car.
Two links (3) will allow you to directly access the sale of new parts or used parts that are compatible.
On the right-hand side (4), the car specifications are displayed. This also displays what the effect of fitting one of your available parts will be if you click on the part.
The preparation interface (5) will allow you to prepare a part already fitted.
You cannot repair a used part. Once used, you can recycle it or try to sell it.