Gates 31457 Fuel Cap Tester Adapter

Fuel Cap Tester Adapter for Ford and Lincoln

The Gates 31457 Fuel Cap/System Tester Adapter is an orange adapter with a grey ring used with radiator cap testers to evaluate fuel cap and system sealing. It is built for specific Ford, Lincoln, Mercury, and Mazda applications across 1996-2006 model years, including many F-150, F-250 Super Duty, Expedition, and Mustang fitments.

Key Features

• Fuel Cap Tester Adapter for use with radiator cap testers
• Orange with grey ring for easy identification
• Direct-fit application coverage for select Ford, Lincoln, Mercury, and Mazda vehicles
• Supports testing on vehicles with black bottom OE caps and select no-threaded-filler-neck configurations
• Gates part number 31457 for accurate ordering and service lookup

Product Details

Gates Fuel Cap/System Tester Adapter 31457 is a service tool adapter used during pressure testing of fuel cap and evaporative system sealing. The adapter interfaces with a radiator cap tester so technicians can evaluate cap integrity and related sealing concerns on covered vehicles. This part cross-references Motorad 12419S and Quality-Built 12419 for the same application. It is listed for a broad range of Ford, Lincoln, Mercury, and Mazda models, including Ford F-150, Ford Expedition, Lincoln Navigator, and Mazda Tribute applications.

What It Helps Diagnose

• Fuel cap sealing concerns that trigger evaporative emissions faults
• Pressure loss during cap or system testing
• Improper cap fitment on select OE cap styles
• Service bay delays caused by incorrect tester adapter selection
• Verification of fuel cap/system integrity on covered Ford and Lincoln vehicles

Installation Notes and Tips

• Use with a radiator cap tester as specified by the manufacturer
• Confirm the vehicle’s cap style and filler-neck configuration before testing
• Match the application notes for black bottom OE caps, snap-on fuel caps, or no threaded filler neck listings where applicable
• Verify the vehicle by year, make, and model before service on Ford, Lincoln, Mercury, or Mazda platforms

Quality Assurance

Gates manufactures service tools and adapters for professional diagnostic use. Part number 31457 is cataloged for specific vehicle applications to support accurate fuel cap and system testing.