Restrictor, removing and installing: Notes

WARNING: This page is about a different car, the 2004 Audi S4, 2004 Audi A4, 2003 Audi A4, and 2002 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Up to model year 2001, restrictors with yellow color markings were installed (diameter of hole/narrow neck 1.54 mm). As of model year 2002, restrictors with red color markings are installed (diameter of hole/narrow neck 1.42 mm). Changing the restrictor does not change the filling quantity of R-134a refrigerant in this vehicle.