Allstar Performance Radiator Cap — 18-22 PSI Small Diameter (32mm) | ALL30125 2008-dodge-durango-esi5712452 ) increases the amount of

) increases the amount of cool

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Allstar Performance Radiator Cap — 18-22 PSI Small Diameter (32mm) | ALL30125 2008-dodge-durango-esi5712452 ) increases the amount ofThe Allstar Performance Radiator Cap (ALL30125) is a round, recovery style cap rated 18 22 PSI, sized for small diameter radiator necks measuring 32 mm. Recovery style caps allow coolant to expand into an overflow bottle as the cooling system heats and draw it back in as the system cools, helping keep the system full. A higher pressure rating raises the coolant's boiling point, which reduces the risk of overheating. FAQ What pressure rating is the