Lichamp AC Oil Injector for R134a & R1234yf Low-Side Ports — Aluminium Hand Pump, Adjustable 7.5–60ml Dosing

Lichamp AC Oil Injector is a compact, adjustable tool for injecting compressor oil and UV dye into automotive R134a and R1234yf air conditioning low-side ports.

Designed for technicians and DIYers, this injector kit combines a lightweight aluminum hand pump, reinforced hose, brass couplers and extra low-side oil checkers so you can add precise amounts of oil or dye through the suction side without removing components. The kit supports small refill volumes (from 7.5 ml to 60 ml) and ships with multiple couplers to fit common R134a and R1234yf service ports, plus a 1/4" female hose fitting suitable for many HVAC adapters.

How do I use the Lichamp injector safely and accurately?

Connect the injector to the low-pressure service port on the vehicle while the system is off or at low pressure, then rotate the knurled handle to dispense the desired volume. The easy-to-read stroke and smooth hand-turn mechanism let even beginners control dosing without special training.

• Attach correct coupler for R134a or R1234yf port.
• Ensure hose and fittings are securely seated before pumping.
• Turn handle slowly to meter oil or dye into the suction side.
• Use included oil checkers to verify flow or remaining quantity.

Which refrigerants and systems is this injector compatible with?

This tool was built to work primarily with automotive R134a and R1234yf systems and also accommodates a 1/4" female fitting useful for some HVAC R410A adapters. The kit’s additional couplers make it adaptable to common low-side service ports so you can switch between vehicle types with minimal fuss.

• Fits R134a and R1234yf automotive low-side ports.
• Includes extra couplers for varying port designs.
• 1/4" female hose fitting for broader adapter compatibility.
• Capacity range: 7.5 ml (1/4 oz) up to 60 ml (2 oz) per fill.

What are the build quality and durability features?

The injector body is machined from lightweight aluminum for portability and corrosion resistance, while the hose is thickened and the couplers are brass to withstand repeated connections. A knurled handle ring provides a secure, non-slip grip so you can perform precise rotations even when wearing gloves.

• Aluminum alloy hand-turn body for strength and low weight.
• Heavy-duty brass couplers for reliable sealing.
• Thickened hose resists kinking and abrasions.
• Knurled ring improves control and aesthetic finish.

How do the included oil checkers and accessories improve workflow?

Two extra low-side oil checkers let you monitor flow and confirm oil has entered the system without disassembly. The assorted couplers reduce adapter swaps between vehicle makes and help you complete service faster with fewer trips to the tool chest.

• Two spare oil checkers for quick verification tests.
• Multiple couplers to match different port shapes and sizes.
• Simple twist-handle control to measure exact doses.
• Compact kit footprint for easy storage in a service bay.

Who is this for: The Lichamp AC Oil Injector is suited to automotive technicians, independent HVAC service providers, and informed DIYers who perform A/C maintenance and leak detection. It’s helpful when you need controlled, small-volume oil or UV dye injections through the low-side port, want a durable yet portable tool, and prefer accessories that let you adapt quickly across R134a and R1234yf systems.