The Mityvac MV4508 Universal Cooling System Adapter installs quickly in virtually any radiator or coolant reservoir neck. Its 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. The compact, self-contained adapter requires no additional components and replaces more than 20 individual adapters used to pressure test vehicle cooling systems.
