Gates 31380 Engine Cooling System Pressure Tester Adapter

Cooling System Adapter for Pressure Testing

The Gates 31380 radiator cap and cooling system tester adapter is a 48mm threaded cooling system adapter used with a radiator cap and cooling system tester to service multiple component sizes. It helps technicians connect the tester to the correct threaded opening for accurate pressure checks on BMW and Land Rover cooling systems.

Key Features

• 48mm threaded cooling system adapter
• Attachment type: cooling system adapter
• Used with radiator cap and cooling system testers
• Supports pressure testing across multiple component sizes
• Gates part number 31380 for service identification

Product Details

Built for diagnostic work, this Gates radiator cap/cooling system tester adapter provides the threaded interface needed to test sealed cooling system components. The Brand Line identifies it as part of Gates’ Radiator Cap/Cooling System Tester Adapter line, which is focused on matching tester equipment to different cap and neck styles. This adapter is a direct service tool for BMW cooling system testing, including applications such as BMW M5, BMW X5, BMW 750i, and BMW 325i, as well as Land Rover Range Rover and Discovery coverage listed in the fitment data. Gates 31380 is also cross-referenced with Dorman - HELP 46823 for the same application.

What It Helps Diagnose

• Cooling system pressure loss during leak testing
• Improper tester connection to a 48mm threaded neck
• Radiator cap or reservoir sealing concerns
• Hard-to-trace coolant leaks in BMW and Land Rover systems
• Service delays caused by mismatched tester adapters

Installation Notes and Tips

Use this adapter with a compatible radiator cap and cooling system tester. Confirm the component thread size before testing, and match the adapter to the vehicle’s cooling system opening listed in the fitment data. For body fitment, this part fits 2012-2018 BMW M6, 2014-2018 BMW M6 Gran Coupe, 2000-2006 BMW X5, 1995-2005 Land Rover Range Rover, and other listed BMW and Land Rover applications. Gates 31380 should be installed only as part of a proper pressure test setup.

Quality Assurance

Gates manufactures service tools and adapters for professional cooling system diagnostics. This part number, 31380, is identified for use with Gates radiator cap and cooling system tester equipment and is listed with confirmed interchange references for service lookup.