Gates - Driven By Possibility. Fuel Tank Cap;. Pre-Release Fuel Tank Cap;. 1997 Ford F-250 HD 5.8L V8 GAS;. 1997 Ford F-250 HD 7.3L V8 DIESEL;. 1997 Ford F-250 HD 7.5L V8 GAS;. Excess fuel system pressure is relieved through an internal spring and gasket valve that is specially designed to allow venting without losing liquid fuel.
