Ford F600-F700 Truck Fuel Tank Caps

Ford F600/700 Replacement Fuel Tank Caps

Frequently Asked Questions About Ford F600-F700 Truck Fuel Tank Caps

Will this fuel tank cap fit my Ford F600 or F700?

Fuel tank caps for these trucks vary by model year and fuel tank neck design, so it is important to check the thread size and neck diameter on your current cap before ordering. If you are unsure, comparing your existing cap to the product specifications listed on the page, or contacting our parts team with your truck's year and tank details, will help ensure a proper fit.

Are these caps vented or non-vented, and does that matter?

Fuel tank caps can be either vented or non-vented, and using the correct type matters for proper fuel system operation. A vented cap allows air to enter the tank as fuel is drawn out, while a non-vented cap relies on a separate vent line elsewhere in the system. Installing the wrong type can lead to fuel delivery issues, so check your original cap or your truck's fuel system setup before purchasing a replacement.

What materials are these fuel caps made from, and how durable are they?

Fuel tank caps in this category are typically made from steel or durable plastic with corrosion-resistant finishes designed to withstand road debris, moisture, and everyday wear. Metal caps generally offer more durability and a locking option, while plastic caps tend to be lighter and more affordable. Choosing the right material often comes down to your budget and how much exposure to harsh conditions your truck sees.

Do these fuel caps come with a locking feature?

Some fuel tank caps in this category include a locking mechanism to help deter fuel theft or tampering, while others are simple twist-on or twist-off designs without a lock. If security is a priority, check the product listing details or filter by locking versus non-locking options before making your selection.

How do I know if it is time to replace my fuel tank cap?

Common signs that a fuel tank cap needs replacing include a loose or stripped fit that will not seal properly, a check engine light related to the fuel system, visible cracking or corrosion, or a missing tether or gasket. A worn or ill-fitting cap can allow fuel vapors to escape or let in dirt and moisture, so replacing it promptly helps keep your fuel system running as it should.