Gas Tank Cap, for Aluminum Tanks

EMPI Gas Tank Cap for Aluminum Tanks (00-3538-0)

The EMPI Gas Tank Cap is a premium chrome-plated replacement designed specifically for spun aluminum fuel tanks. Whether you are finishing a custom build or replacing a worn-out part, this vented cap ensures your fuel system functions correctly while adding a clean, polished look to your vehicle.

VW Fitment & Compatibility

This gas cap is engineered to fit spun aluminum gas tanks commonly used in custom Volkswagen applications, such as Dune Buggies, Sand Rails, and Manx-style shells. It is specifically designed for filler necks featuring a 2-notch locking mechanism. Please note that this is an aftermarket component intended for aluminum tanks and is not a direct replacement for stock steel Beetle, Ghia, or Bus gas tanks.

Pro Tech Tips for Your Fuel System

1. Verify the Venting: This is a vented gas cap, which is essential for gravity-fed fuel systems or systems using mechanical fuel pumps. Without proper venting, a vacuum can form inside the tank as fuel is consumed, leading to engine stalling or "fuel starvation." Always ensure the vent hole remains clear of debris.

2. Inspect the Gasket Periodically: Over time, exposure to modern fuel blends and ethanol can cause the rubber gasket inside the cap to dry out or crack. Inspect your seal every season to prevent fuel leaks and to keep gasoline fumes from escaping, which is especially important in open-cockpit vehicles like sand rails.

3. Avoid Over-Tightening on Aluminum Necks: Since this chrome-plated cap is used on spun aluminum tanks, the filler neck material is softer than the cap itself. Align the two notches carefully and turn until snug. Forcing the cap can gall the aluminum threads or notches, making it difficult to achieve a liquid-tight seal in the future.