Find AC Leaks Fast with UV Fluorescent Dye

Stop guessing where your car's air conditioning system is leaking. This Car AC UV Dye Leak Detection Kit uses advanced fluorescent tracer oil to pinpoint refrigerant and fluid leaks quickly, accurately, and without making a mess. Simply add the dye to your AC system, run the compressor for 10 minutes, and scan with a UV flashlight — any leak glows bright under ultraviolet light. Made in Mainland China.

Why Choose This UV Leak Detection Kit?

Universal Compatibility: Works with most car air conditioning and refrigeration compressor systems, including R134a and similar refrigerants.
Multi-Fluid Use: Detects leaks in AC refrigerant lines, power steering fluid, engine oil, automatic transmission fluid, coolant, hydraulic systems, and fuel lines.
Eco-Friendly Formula: Pollution-free, non-hazardous dye that is safe for your vehicle's components.
Easy to Use: Adds directly through the low-pressure service port — no special tools or professional training required.
Glows Under UV Light: Paired with a UV/black-light flashlight, leaks are instantly visible as bright fluorescent spots.
CE Certified: Meets external testing certification standards.
Generous Capacity: Each bottle holds approximately 60 ml of fluorescent dye tracer.
Flexible Pack Sizes: Available in 1, 2, or 3-pack to suit your needs — stock up and save.

Specifications

Capacity: ~60 ml per bottle
Certification: CE
Compatible Systems: AC refrigerant, oil, power steering, fuel, automatic transmission, coolant, hydraulics
Pack Options: 1, 2, or 3 bottles
Origin: Made in Mainland China

How to Use

Add the UV dye through the low-pressure filling port of the AC system (same method as adding refrigerant oil). For dual-zone vehicles, make sure both front and rear AC switches are turned on.
Allow the fluorescent dye to circulate through the entire refrigerant circuit.
Run the AC system for approximately 10 minutes.
Put on protective UV-tinted glasses and use a UV/black-light flashlight to inspect all hoses, connections, and components.
Any areas showing a bright fluorescent glow indicate a leak — repair or replace the affected parts as needed.

What's in the Box?

UV Fluorescent AC Dye × 1, 2, or 3 (based on selected option)

For further guidance on automotive AC system maintenance and refrigerant safety, visit the U.S. EPA Motor Vehicle Air Conditioning (MVAC) resource page.

Frequently Asked Questions

Q: Is this UV fluorescent AC dye compatible with my car's refrigerant type?

A: Yes — this UV dye leak detector is designed to be universally compatible with most automotive air conditioning refrigerant systems, including common types like R134a. It can also be used in power steering, fuel, transmission, coolant, and hydraulic systems, making it a versatile leak detection tool for your entire vehicle.

Q: Do I need a UV flashlight to use this leak detection kit?

A: A UV (ultraviolet) or black-light flashlight is required to see the fluorescent dye glow at leak points. While the flashlight is not included in this kit, UV inspection lights are widely available. We also recommend using UV-protective glasses during inspection for eye safety.

Q: How long does the UV dye stay in the AC system after I add it?

A: The fluorescent UV dye remains in the system indefinitely, which is actually an advantage — if a new leak develops after your initial repair, you can re-scan with the UV light at any time without needing to add more dye. It does not harm your AC compressor or other components.

Q: How much dye should I add per application?

A: Each bottle contains approximately 60 ml. For most passenger vehicle AC systems, one bottle is sufficient for a single treatment. Larger vehicles or those with dual-zone AC may benefit from two bottles. Always follow your vehicle manufacturer's guidelines for oil capacity when adding any fluid to the AC system.