Gates 31379 Engine Cooling System Pressure Tester Adapter

Radiator Cap Tester Adapter for Cooling System Service

The Gates 31379 radiator cap/cooling system tester adapter is a 52mm O.D. threaded cap adapter used with a radiator cap and cooling system tester to service multiple component sizes. It supports pressure testing on a wide range of Ford, Lincoln, Jaguar, Land Rover, Nissan, and other applications listed below.

• 52mm O.D. threaded cap adapter
• Used with a radiator cap and cooling system tester
• Attachment type: cap adapter
• Type: cap adapter
• Supports cooling system pressure testing across multiple vehicle platforms

Product Details

Gates 31379 is part of the Gates radiator cap/cooling system tester adapter line, built to help technicians connect the tester to the correct cap or recovery tank opening for the application. This adapter is used on many Ford Explorer, Ford Taurus, and Lincoln Navigator service applications, along with Jaguar XF and Jaguar F-Type fitments, making it a practical service tool for diagnosing cooling system pressure loss and cap-related concerns. This part cross-references Dorman - HELP 46822 for the same application.

What This Adapter Helps Diagnose

• Cooling system pressure loss during radiator cap testing
• Faulty radiator cap sealing or retention issues
• Leaks at coolant recovery tank or threaded cap openings
• Incorrect tester connection on 52mm threaded components
• Repeat cooling system service checks on Ford, Lincoln, and Jaguar platforms

Installation Notes and Tips

• Use only with the matching radiator cap/cooling system tester.
• Confirm the component opening is 52mm O.D. threaded before testing.
• Match the adapter to the exact vehicle application listed in the fitment data.
• Inspect the cap, neck, and sealing surfaces before applying pressure.
• For fitment examples, this adapter is listed for vehicles such as the 2018-2021 Jaguar F-Type, 2017-2020 Jaguar F-Pace, and 2017-2019 Ford Explorer.

Quality Assurance

Gates manufactures service tools and components for professional automotive cooling system work. Part number 31379 is identified as a radiator cap/cooling system tester adapter with threaded 52mm O.D. construction for listed applications.