Lichamp AC Oil Injector for R134a & R1234yf — Handheld Dye/Oil Injector Kit, Adjustable 7.5–60ml Metering, Brass Couplers

The Lichamp AC Oil Injector R134A, R1234YF is a handheld injector kit for accurately adding oil or UV dye to automotive A/C systems via the low-pressure port.

This compact, professional-grade injector is built for mechanics and DIYers who need a reliable way to introduce small, measured amounts of compressor oil or leak-detecting dye into R134a and R1234yf air conditioning systems. It pairs an aluminum-turn body with heavy-duty brass fittings, includes multiple couplers for broad port compatibility, and comes with extra low-side oil checkers to simplify verification after service.

How do I use the injector safely and accurately?

Operation is straightforward: connect the injector to the low-pressure service port, select the target volume by turning the knurled handle, then inject until the desired amount is delivered. The design prioritizes controlled, one-handed dosing so even novices can avoid overfilling.

• Connect to the blue low-side port or included couplers for R134a/R1234yf
• Turn the knurled handle to meter 1/4 oz to 2 oz (7.5 ml–60 ml)
• Use the included oil checkers to confirm oil presence after injection
• Lightweight aluminum body reduces operator fatigue during repeated use

Which refrigerant systems and hoses does this kit work with?

The kit is compatible with both automotive R134a and R1234yf low-side ports and is also adaptable for certain R410A HVAC fittings via the supplied couplers. Its 1/4-inch female hose fitting and extra adapters make it useful across a wide range of passenger vehicle and light-duty HVAC tasks.

• Includes couplers for R134a (blue) and R1234yf ports
• 1/4 inch female hose fitting for standard service hoses
• Works with common automotive A/C compressors and many R410A setups
• Extra low-side oil checkers included for verification

What features make this injector durable and precise?

The injector uses a thickened hose and brass couplers for secure, leak-resistant connections, while the aluminum alloy hand-turn body balances strength with light weight. A knurled handle ring gives a non-slip grip for precise rotations, and superior sealing reduces backflow or drips.

• Aluminum alloy body for long-lasting, lightweight use
• Heavy-duty brass couplers for reliable connections
• Knurled, non-slip handle for accurate metering
• High-quality seals to minimize leaks during injection

How much oil or dye can I inject and how is volume controlled?

The injector meters small volumes suitable for A/C service, adjustable from about 1/4 oz (7.5 ml) up to 2 oz (60 ml). The twist-handle mechanism lets you stop at precisely the required amount, helping preserve compressor health and avoid overfilling.

• Adjustable capacity: 7.5 ml to 60 ml per injection
• Hand-turn metering for incremental delivery
• Clear, repeatable dosing useful for multiple components
• Extra oil checkers assist in confirming proper distribution

Who this is for: The Lichamp AC Oil Injector is ideal for automotive technicians, independent repair shops, and experienced DIYers who service A/C systems and need a compact, reliable way to add oil or UV dye through the low-pressure side. If you work on R134a or R1234yf systems and want precise, leak-resistant dosing with broad port compatibility, this kit provides a practical, workshop-ready solution.