The Tracerline® leak detection kit for R-1234yf A/C systems is the safe, accurate solution for pinpointing refrigerant leaks in today’s advanced automotive air conditioning systems. This complete kit includes TRACER® UV dye formulated specifically for R-1234yf refrigerant. The dye circulates safely without affecting system performance and glows bright under any leak detection flashlight, helping technicians find even the smallest leaks fast — before they lead to costly refrigerant loss, system damage, or failed inspections.