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The Mastercool 53123 is a Refillable Universal Dye Injector w/2oz. concentrated dye. To inject the oil or dye, simply connect the injector to the low side of the A/C system and twist the handle until you reach the desired amount. The injector hose comes complete with a R134a coupler and auto shut-off valve adapter for 1/4″FL systems.
- Refillable Universal Dye Injector w/2oz. Concentrated Dye