SURIEEN AC Dye Injector Kit — 2 oz R134a Oil & Fluorescent Dye Injector with Aluminum Body and Low‑Side Quick‑Coupler

SURIEEN AC Dye Injector Kit is a handheld 2 oz refrigerant oil and fluorescent dye dispenser designed to introduce lubricant or leak-detecting dye into R134a, R410a, R22 and R12 air conditioning systems without relying on a running compressor.

Whether you're servicing an automobile A/C or a home HVAC unit, this compact injector lets you add POE or mineral oil and compatible dyes safely and precisely. Built with an aluminum body, brass fittings, and a quick-connect low-side coupler, the tool is intended for field technicians and DIYers who need a reliable way to top up oil or inject trace dye when tracking elusive leaks.

How does the SURIEEN injector get oil or dye into a closed A/C system?

The injector uses a two-cylinder, push-in design and a one-quarter SAE threaded core to force oil or dye into the low‑pressure side of the refrigeration circuit. It does not require the compressor to be operating; the manual action displaces fluid into the system through the quick-connect coupler.

• 2 oz (60 ml) inner/outer cylinder capacity for controlled dosing
• 1/4" SAE threaded valve core to purge air before injection
• Low-side 13 mm snap-on coupler for secure connection to the service port
• Works with POE, mineral oils and fluorescent dye formulations

Will this tool fit my vehicle or HVAC service ports?

The kit includes a standard R134a low-side quick coupler and a 1/4" female connector, making it compatible with most R-134a systems and many other refrigerant circuits. For a few 5/16" fittings found on some R410a systems, an alternate adapter (CV23p) may be required to achieve a proper seal.

• Standard R134a snap coupler for most cars and light HVAC units
• 1/4" SAE connector compatible with common service hoses and manifolds
• Aluminum body and brass connector for corrosion resistance and durability
• Adapter guidance provided for less common 5/16" R410a fittings

How do I operate the injector safely and avoid introducing air or contaminants?

Assembly and use are straightforward: screw the check valve onto the cartridge, tighten clockwise, then slightly depress the inner core to purge trapped air into the blue discharge tube before connecting the coupler. Following those steps minimizes air ingress and helps ensure the correct volume is delivered to the system.

• Hand-tighten check valve and cylinders clockwise until secure
• Use the threaded inner core to expel a small amount of air before connection
• Attach to low-side port with the quick-snap coupler for a sealed connection
• Inject measured amount; avoid overfilling and follow manufacturer oil specs

What materials and compatibility features make this kit durable for field work?

The SURIEEN injector pairs an aluminum alloy body with brass fittings and a reinforced high-pressure hose to withstand regular use on service calls. The construction is chosen to resist wear, provide good sealing, and remain compatible with refrigerants and common oil or dye chemistries.

• Aluminum alloy chassis for lightweight strength during transport and use
• Brass connector for dependable thread sealing and corrosion resistance
• High-pressure hose rated for refrigerant service applications
• Designed to accept fluorescent dyes and both POE and mineral oils

Who this is for: Technicians and experienced DIYers who maintain automotive A/C or residential/commercial HVAC systems and need a compact, manual way to add lubricant or trace dye without running the compressor. The SURIEEN kit suits field service use, routine top‑offs, or targeted dye injections for leak locating when combined with compatible UV dyes and inspection lights. A one‑year warranty and SURIEEN support are included for peace of mind.