1175 BMW Radiator Expansion Tank Pressure Test Fitting

The Motive Products 1175 Fitting is a brass replacement screw-in pressure-test fitting for BMW and Mini radiator expansion tanks. It threads directly into the expansion tank port, enabling fast, accurate cooling-system pressure testing with the Motive Power Tester — an essential diagnostic step for tracking down head gasket failures, cracked tanks, or weeping hoses on BMW and Mini platforms.

Vehicle Fitment

Designed for BMW and Mini vehicles with the matching expansion tank pressure-test port:

• BMW 3-Series – E46, E90, E91, E92, E93, F30, F31 and related
• BMW 5-Series – E39, E60, E61, F10, F11 and related
• BMW X3, X5 and other BMW X-series with matching tank port
• Mini Cooper, Cooper S, Clubman, Countryman (R50/R53/R55/R56 and related)

Verify your expansion tank has the matching screw-in port before ordering.

Key Features

• Brass Construction – corrosion-resistant; seals cleanly on BMW/Mini expansion tank ports.
• Screw-In Design – threads directly into the OEM pressure-test port for a leak-free connection.
• Motive Power Tester Compatible – connects to the Motive cooling-system pressure tester for accurate leak diagnosis.
• Quick Diagnostic Tool – identify cooling-system leaks before they become major engine repairs.

How to Use

Thread the 1175 fitting into the BMW/Mini expansion tank port, attach the Motive Power Tester, and pressurize the cooling system to the specified cap pressure. Monitor for pressure drop to identify leaks. Remove and reinstall the OEM cap after testing. Recommended whenever a BMW or Mini is in for overheating diagnosis or pre-purchase inspection.

WARNING: Reproductive Harm – www.P65Warnings.ca.gov