Red Angel A/C Refrigerant Stop Leak (4.5 oz) - 6 Pack

AC leaks in rubber hoses, O-rings, and gaskets are among the most common reasons automotive air conditioning systems lose their charge. Red Angel AC Refrigerant Stop Leak by BlueDevil is a one-shot aerosol treatment that seals those leaks from the inside, and this six-pack keeps you stocked for multiple vehicles or repeat service.

Each 4.5-ounce can includes the stop leak formula, a refrigerant charge, and UV dye. The attached coupler connects directly to your vehicle's low-side service port, so there is no separate hose or tool needed. Once injected into the system, Red Angel circulates with the refrigerant and activates at the leak site where air is present, forming a chemical weld that seals the breach. After the repair is complete, the formula continues to lubricate and condition the AC system's internal seals and components.

The included UV dye is a useful feature for verifying the repair. After running the system, check with a UV light to confirm the leak has sealed. Red Angel is designed for R-134a systems and will not clog or damage the AC compressor, condenser, or evaporator. This six-pack format is practical for shops or anyone maintaining a fleet of vehicles.