FJC AIR CONDITIONING PRODUCTS 4921 R-134a DyeCharge Fluorescent Dye Part No: 4921

The FJC 4921 R-134a DyeCharge Fluorescent Dye is a professional leak detection solution for automotive air conditioning systems using R-134a refrigerant. Specially formulated to flow easily through the system, this dye helps locate leaks quickly when exposed to UV or black light. It’s safe for use with PAG, ester, and mineral oils, ensuring compatibility with a wide range of vehicles. Technicians and DIY users rely on it for routine service checks and diagnostics, making it a valuable tool for efficient A/C system maintenance.