LEAKFINDER AC Leak Detection Kit LF810 — 8oz UV Refrigerant Dye, Caulking-Gun Injector & R134a Coupler

LEAKFINDER LF810 BIGEZ is a complete 8 oz UV fluorescent refrigerant leak detection injection kit with a caulking-gun injector, R134a hose coupler, and multi-dose dye cartridge for quickly locating AC leaks.

This professional-grade kit from LEAKFINDER provides a reliable, easy-to-use method for finding and diagnosing refrigerant and fluid leaks in automotive air conditioning systems. The LF810 combines an 8 oz LF1800 BigEZ dye cartridge formulated to fluoresce under UV light, a caulking gun-style injector for controlled dye delivery, and an R-134a hose/coupler plus purge fitting for safe connection to vehicle systems. It’s engineered for technicians and DIYers who need accurate, repeatable leak detection without expensive equipment or lengthy teardown.

How does the LF810 locate tiny or intermittent AC leaks?

The dye in the LF1800 cartridge circulates with the refrigerant and highlights escape points under ultraviolet illumination. Because the dye is highly fluorescent, even small pinhole leaks and intermittent seepage show up clearly when inspected with a compatible UV lamp. This makes tracing the exact leak site much faster than pressure or soap-bubble methods.

• Bright UV dye visible under inspection lamps for faster identification
• Penetrates and follows refrigerant or fluid to reveal hard-to-see leaks
• Effective on pinhole, seam, gasket, and intermittent leaks
• Each 8 oz cartridge supports multiple vehicles—cost-efficient for shops

What components are included and how do they work together?

The LF810 kit bundles a BigEZ LF1800 8 oz multi-dose dye cartridge, a caulking gun-style dye injector assembly, an R-134a hose/coupler with purge fitting, and clear usage workflow. The injector mounts like a caulking gun so you can meter dye delivery precisely while the hose coupler connects securely to the vehicle’s service port. Purging ensures trapped air is removed before injection and prevents contamination.

• LF1800 8 oz dye cartridge — multi-dose, up to dozens of service injections
• Caulking-style injector — controlled, repeatable dye application
• BigEZ R-134a hose/coupler and purge fitting — secure, clean connections
• Compatible with LEAKFINDER UV lamps for inspection and verification

How do technicians use the kit safely and effectively?

Attach the coupler to the R-134a service port, purge the line, and inject the dye using the caulking-style gun while the system is running or as directed by vehicle procedures. Allow the dye to circulate and then scan suspect areas with a UV inspection lamp to reveal fluorescent traces. Follow vehicle manufacturer guidelines for pressure and refrigerant handling; wear eye protection and gloves for routine safety.

• Connect, purge, then inject dye per system service instructions
• Run the system briefly to distribute dye, then inspect with UV light
• Use PPE and follow refrigerant handling procedures for safety
• Clean excess dye from exterior surfaces to leave a tidy repair area

How much service does one cartridge provide and where is it best used?

Each LF1800 8 oz BigEZ cartridge covers multiple vehicles, making it economical for repair shops and fleet maintenance. The multi-dose format lets technicians inject calibrated amounts across different jobs without waste. It’s especially useful for automotive AC systems, refrigeration service benches, and any fluid-based systems where UV dye tracing helps pinpoint faults.

• Multi-dose cartridge reduces cost per service for busy shops
• Suitable for automotive AC and other fluid-refrigerant systems
• Compact kit fits shop environments and mobile service vans
• Made in the USA with industry-tested dye formulations

Who is this for: The LEAKFINDER LF810 BIGEZ kit is aimed at professional mechanics, independent repair shops, fleet service units, and knowledgeable DIY enthusiasts who need a dependable, repeatable method to find refrigerant and fluid leaks. If you require accurate visual confirmation of leaks, multi-vehicle economy, and components designed to work together for clean injections and quick inspections, this kit fits those needs.