DyeCharge for R1234yf Systems – Leak Detection Dye 12 Cans

FrostGuard Solutions
5.0 (24 reviews)
$109.99

🚫 NOT R1234yf Refrigerant! Read Before Buying!
This product is NOT actual R1234yf refrigerant. It contains a small propellant charge only to push the fluorescent UV dye into your A/C system — it will not recharge your system or replace refrigerant.

🔍 Purpose:
Enviro-Safe® DyeCharge for R1234yf Systems is designed to help you locate leaks in your vehicle’s A/C system quickly and easily. When used with a blacklight and UV glasses, the bright yellow dye highlights leak points in hoses, seals, and fittings.


⚙️ Key Features & Benefits

✅ Compatible with R1234yf automotive A/C systems
✅ Works with mineral, ester, and PAG oils
Highly concentrated fluorescent dye — same color used by major automakers
4 oz can treats one full-size car or truck
Gas-propelled for easy installation
✅ Installs the same way as refrigerant — simple and fast!
✅ Helps prevent costly compressor damage by revealing hidden leaks early


⚠️ Important Compatibility Notes (Please Read!)

Right-Hand Thread Valve (R134a Style):
This can uses a standard R134a-style top, NOT the newer left-hand R1234yf thread.
➡️ If you are using a standard YF charging hose or gauge, it will not connect properly.
🧰 To use this product safely, you’ll need a 134a-to-YF adapter hose (available separately on our site).

💨 Not a Refrigerant Replacement:
This product only adds fluorescent dye, not refrigerant. It’s used for leak detection only.


🧪 How to Use

1️⃣ Shake can well before use.
2️⃣ Make sure your A/C system is off and pressure is correct.
3️⃣ Attach a can tap and charging hose to the low-pressure side only.
4️⃣ Invert the can (valve facing down).
5️⃣ Dispense the full contents into the system.
6️⃣ Run the compressor to circulate the dye.
7️⃣ Inspect with a UV light and glasses to locate leaks.
8️⃣ Dispose of the empty can responsibly.


🚫 Do Not Use In

  • Ammonia systems

  • CO₂ (R744) systems


📦 Additional Info

  • Part #: 3565 (UV Glasses), 3525 (Blacklight)

  • Ships to the continental U.S. only — ❌ No Alaska, Hawaii, or international shipments (unless pallet quantities)

  • Proudly made and packaged in the USA 🇺🇸


Pro Tip

Pair this with our R134a-to-R1234yf adapter hose for a perfect fit!
🧊 See our Accessories section for compatible gauges and adapters.