Qnbes AC Oil Dye Injector 2 oz Brass Refillable Reservoir, Low-Side Quick-Connect for R134A/R12/R22

The Qnbes AC Oil Dye Injector is a solid-brass 2 oz injector kit that lets you add compressor oil or fluorescent dye quickly and securely into R134A/R12/R22 automotive and HVAC systems.

Designed for technicians and DIYers who service air conditioning systems, this compact injector combines a 60 ml refillable reservoir with durable brass fittings and quick-connect couplers. It supports low-side charging, works with mineral or POE oils and fluorescent dyes, and is built to resist wear and corrosion so you can perform leak detection or top-ups without messy spills.

How does the Qnbes injector make adding oil or dye easier?

The injector uses a screw-sealed 2 oz syringe body and a low-pressure quick coupler to create a tight, controllable connection to the AC low-side port. That reduces leaks and lets you push additives into the system while the compressor runs for correct circulation.

• 2 oz (60 ml) refillable capacity for fewer refills
• Solid brass construction for corrosion and wear resistance
• Low-voltage 13 mm ID coupler to 1/4" SAE adapter for easy hookup
• Clear screw cap to confirm fill level and secure seal

Which refrigerants and oils are compatible with this injector?

The Qnbes injector is compatible with common automotive and HVAC refrigerants including R134A, R12, and R22, and accepts both mineral and PAG/POE compressor oils. It is also suitable for injecting fluorescent leak-detection dyes that mix with system oil.

• Works with R134A, R12, R22 refrigerant systems
• Accepts mineral oil and POE/PAG lubricants
• Compatible with fluorescent dyes for leak testing
• Universal low-side coupling for most vehicle and stationary systems

What safety and usage steps should I follow when injecting oil or dye?

Follow the injector's installation steps precisely: start with the system running and compressor engaged, use the low-side service port, and tighten all fittings before pressurizing. After injection, clean the tool to avoid cross-contamination and store it dry to preserve seals.

• Run the AC with compressor on before injection
• Attach low-side quick coupler securely to the service port
• Open injector valve only after connections are tightened
• Clean with brake cleaner after use to remove residue

How long will the injector last and what maintenance does it need?

Built from solid brass, the injector resists rust and mechanical wear, extending usable life under routine professional or DIY use. Regular cleaning after each use and checking seals and couplers will keep performance reliable.

• Solid brass body minimizes corrosion and wear
• Check O-rings and threads for wear before each job
• Wipe and flush the tool after use to prevent clogging
• Store in a dry place away from prolonged refrigerant exposure

Who is this for:

The Qnbes AC Oil Dye Injector is intended for automotive technicians, HVAC service professionals, and informed DIYers who need a compact, reliable tool for adding compressor oil or dye to AC systems. It suits anyone performing leak detection, routine top-ups, or precision additive dosing on vehicles and small stationary air conditioners, and who values durable brass fittings, secure quick-connects, and a 2 oz capacity for efficient service work.