International S1700-S1900 Fuel Tank Caps

Frequently Asked Questions About International S1700-S1900 Fuel Tank Caps

Will this fuel tank cap fit my International S1700 or S1900 truck?

Fuel tank caps for the International S1700-S1900 series are designed to match the fuel tank neck and thread pattern used on these models. Because trucks in this series may have been fitted with different tank styles over their production years, it's important to compare the thread diameter, cap style (vented or non-vented), and mounting type against your current cap before ordering to ensure a proper fit.

What is the difference between a vented and non-vented fuel cap?

A vented cap allows air to enter the tank as fuel is drawn out, preventing a vacuum lock that can restrict fuel flow to the engine. A non-vented cap is sealed and relies on other venting points in the fuel system. Most S1700-S1900 applications use a vented cap, so it's worth confirming which type your truck currently has installed before replacing it.

What materials are these fuel tank caps made from, and how do they hold up over time?

Fuel tank caps for this series are typically made from durable plastic or metal components designed to withstand regular exposure to fuel, road grime, and weather. Over time, gaskets and seals can wear down, which is often the main reason a cap needs to be replaced rather than the cap body itself failing.

Does this fuel cap come with a locking feature?

Some fuel tank caps for the S1700-S1900 series are available with locking mechanisms to help deter fuel theft, while others are non-locking. Check the product listing details and included key count, if applicable, before purchasing to make sure it matches your security needs.

How do I know if I need a new fuel cap versus a new fuel neck or seal?

If you're noticing fuel odor, difficulty sealing the cap, or a loose fit even with a new cap installed, the issue may be with the fuel neck or gasket rather than the cap itself. Inspecting the fuel neck threads and the rubber seal on the old cap can help you determine whether a simple cap replacement will solve the problem or if additional parts are needed.