Fuel return line and vented cap are part of two different functions.
If your car has a separate vent tube attached to the fuel filler neck area then you need a non-vented cap. If your tank does not have a vent tube then you need a vented cap. To be sure, drive the car then remove the fuel cap. There should be no suction when you remove the cap.
Vikki 1969 Goldenrod Yellow / black 400 convertible numbers matching
