Gates 31316 Fuel Tank Cap

Gates 31316 Locking Fuel Cap Overview

The Gates 31316 Regular Locking Fuel Cap is a vented fuel tank cap built to meet OEM specifications and federal and state emission requirements. It uses a two-way pressure relief and vacuum relief valve to let the tank breathe while helping contain fuel vapors.

For drivers searching for a locking fuel cap for fuel tank service, a vented replacement fuel cap, or a Gates fuel tank cap for OEM-style sealing, this part number 31316 provides a direct-fit solution for many applications that use 3.0-8 NPSL threads.

Key Features

• Lockable fuel cap for added fuel system security
• Regular fuel cap design with vented operation
• 3.0-8 NPSL thread diameter
• 4-inch shell diameter and 2.125-inch depth
• Two-way pressure relief and vacuum relief valve
• Built to meet OEM specifications and emission requirements

Product Details

Gates Regular Locking Fuel Cap 31316 is made for vehicles that require a vented, threaded fuel tank cap with locking capability. The venting design supports normal tank breathing while the valve system helps reduce fuel vapor escape. This makes it a practical choice for fuel tank cap replacement on vehicles such as Ford F-150, Chevrolet Silverado, and Dodge Ram applications that use the correct thread and cap style.

The Gates product line focuses on replacement parts that follow original equipment requirements, and this fuel cap continues that approach with a regular locking design for service work where sealing, venting, and fit are important. If you are replacing a worn or missing cap, Gates 31316 helps restore proper closure and fuel system function.

This part cross-references Motorad 2533-11 for the same application.

Common Problems It Can Help Solve

• Loose, damaged, or missing fuel tank cap
• Fuel vapor odor from a worn cap seal or venting issue
• Check engine light concerns related to fuel cap sealing
• Difficulty maintaining proper tank pressure or vacuum balance
• Need for a locking fuel cap replacement with the correct thread size

Installation Notes and Tips

Confirm the tank neck uses 3.0-8 NPSL threads before ordering. Match the cap style, venting type, and shell diameter to the original fuel cap for proper fit. Clean the filler neck sealing surface before installation and verify the cap locks and seats fully after tightening.

For vehicle-specific service, compare the original cap to this Gates 31316 replacement before installation on Ford F-150, Chevrolet Silverado, or Dodge Ram models with the same fuel cap specification.

Quality Assurance

Gates states that this locking fuel tank cap meets OEM specifications and federal and state emission requirements. The pressure relief and vacuum relief valve design supports controlled tank venting while helping limit fuel fumes.