FOR GDI Direct Injectors using 4 mm OD filters (outer diameter of the basket)

Safely and easily removes the smaller 4mm micro filters found in several top feed GDI fuel injectors. 

Correct size for the smaller 4mm filters so you will not create damage to the injector.

This tool WILL NOT work on the 6mm filters found in most Port top feed injectors, or some GDI applications.