Harbor Freight Tools


Radiator Pressure Tester Kit

Test radiator pressure yourself with this reliable tester kit

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This radiator pressure tester helps find internal and external leaks in your cooling system. Features include a thumb-operated relief valve for quick and easy pressure release and self-locking quick-disconnecting components. This radiator pressure tester kit includes 8 radiator cap adapters to service most domestic and imported vehicles.

  • Rugged and sturdy, engineered for superior detection of even minor leaks
  • For testing automotive pressurized cooling systems up to 30 PSI
  • Self-locking quick-disconnect components
  • Thumb-operated relief valve
  • Large volume pump capacity reduces strokes required to pressurize cooling systems
  • Includes 8 radiator cap adapters for servicing most domestic and import vehicles

63862, 63893
Large volume pump,8 radiator cap adapters, Self-locking quick-disconnect components, Hose
Service radiators on most domestic and imported vehicles
Hose Length
10-1/2 in.
Maximum pressure (PSI)
30 PSI
Product Weight
5.3 lb.
Shipping Weight
5.76 lb.
Working pressure (psi)
0-30 PSI
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.