Harbor Freight Tools


R134A A/C Manifold Gauge Set

Test, diagnose, and recharge R134A air conditioning systems

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This A/C Manifold Gauge Set is designed to test R134A air conditioning systems by comparing the "high side" and "low side" pressure readings. This A/C Manifold Gauge Set can be used to test, evacuate and fill R134A air conditioning systems.

  • Precise high side (0-500 PSI) and low side (0-120 PSI) pressure readings
  • Color coded gauges, valves and hoses to ensure correct installation
  • Large 2-1/2 in. gauges with impact-resistant lenses
  • Sight glass for viewing condition of refrigerant
  • Quick-connect fittings
  • High pressure safety valve

+/- 2%
2-1/2 in.
Hose Length
57 in.
Product Weight
5.53 lb.
High Side 0-500 PSI, Low Side 0-120 PSI
Shipping Weight
6.38 lb.
Thread size
1/4 in. FFL, 1/2 in. ACME
CA Residents
Warning - Prop 65 Info
Note: Specifications are approximate and subject to change

We guarantee the emissions control system on your engine will be free from defects in material and workmanship for two (2) years, provided there has been no improper maintenance, misuse, or abuse of your engine. We guarantee this product to be free from defects in materials and workmanship for 90 days from the date of purchase. Limitations apply.