Mityvac MV4508 Universal Cooling System Adapter

Part Number: MTY-MV4508
Connect hand pump to Universal Radiator Adapter and perform
pressure test.
Universal Cooling System Adapter is simple and quick to install in virtually any radiator or coolant reservoir neck.

The rubber, step-and-cone design features a self-locking, nested cam and internal restrictor that combine to provide a secure, airtight seal with only a single rotation of the expansion knob.
Price:  $37.69
Weight:  0.50