Boltigen AC Oil & Dye Injector Kit — R134a R1234yf R410A Adapter Set with Adjustable Ball Valve and 7.5–60ml Reservoirs

Boltigen AC Oil Dye Injector Kit is a professional-grade injector set that lets technicians and DIYers inject oil and fluorescent dye into vehicle and mini-split A/C systems safely through the low-side service port.

Designed for diagnostics and service, this kit combines multiple quick couplers, a screw-in injector reservoir, an adjustable ball valve, and oil checkers so you can add precise volumes of POE or mineral oil and detect leaks using compatible dyes. Built from metal and oil-resistant components, the set supports R134a, R1234yf and R410A systems and includes adapters for common service fittings.

How does the injector kit make adding oil or dye to my A/C simple?

The injector uses a screw-in reservoir with a controlled ball valve that isolates the coupler from the container so you can meter small, repeatable volumes into the low-pressure side. The capillary-style fittings and included couplers let you attach to multiple refrigerant types without improvising seals.

• Reservoir sizes from 7.5 ml up to 60 ml for precise dosing
• Ball valve to prevent backflow and enable measured injection
• Screw-in connector for secure attachment to service port
• Compatible with fluorescent dye and both POE and mineral oils

Which fittings and adapters are included for different refrigerants?

The kit bundles quick couplers tailored for modern refrigerants and a mini-split adapter so you can service vehicles and HVAC units without buying separate adapters. Each coupler is sized to mate with standard low-side ports for R134a, R1234yf and R410A mini-splits.

• R134a low-side quick coupler with 1/4" SAE male to 13mm female
• R1234yf quick coupler designed to interface with 14mm female fittings
• R410A mini-split adapter converting 5/16" SAE female to 1/4" SAE male
• Cross-compatible coupler layout for easy switching between refrigerants

What materials and durability can I expect from this toolset?

Boltigen built this injector set from heavy-duty metal and oil-resistant elastomers that resist corrosion, wear, and hardening after repeated exposure to refrigerant oils. The construction is intended for field use in repair shops and DIY garages where tools are exposed to oils and refrigerants.

• Metal body components for strength and long service life
• Rubber seals formulated to resist oil swelling and degradation
• Corrosion-resistant finishes to withstand workshop environments
• Replaceable O-rings and service-friendly design for maintenance

How do the oil checkers help when servicing an A/C system?

Oil checkers in the kit let you sample and inspect existing lubricant in the system, helping determine oil level and basic oil condition before adding any dye or top-up. That avoids overfilling and ensures you choose compatible oils for the compressor and system type.

• Quick visual inspection for oil presence and approximate quantity
• Useful to verify POE versus mineral oil compatibility
• Helps avoid unnecessary additions that could harm system performance
• Simplifies pre-service diagnostics and record-keeping

Who this kit is for: technicians, HVAC installers, and experienced DIY vehicle owners who perform A/C maintenance or leak diagnostics will find this Boltigen set valuable. It is tailored for users who need precise dosing, multi-refrigerant compatibility, and durable components for repeated shop use. Avoid use unless you are comfortable working with refrigerant systems and follow local regulations when handling refrigerants and fluorescent dyes.