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Home >> Acura >> 1993 >> Integra GS-R >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> General Servicing >> A/C System General Servicing >> USING R-12 & R-134a REFRIGERANT >> IDENTIFYING R-134a SYSTEMS & COMPONENTS >> Fittings & "O" Rings

Fittings & "O" Rings

All R-134a based A/C systems use 1/2" - 16" ACME threaded fittings (identifiable by square threads) and quick-connect service couplings. See Fig 1. Besides the use of these fittings, most manufacturers will use Green colored "O" rings in R-134a systems.

Fig 1: R-134a Fittings & Quick Connect Service Couplings ID
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