Auto A/C Oil & Dye Injector 1oz | 1/4" SAE Low Side Coupler

Keep your vehicle or home air conditioning system running at peak performance with this professional-grade A/C Oil & Dye Injector. Designed for both automotive and residential HVAC systems, this 1oz (30ml) hand-held injector makes it simple to add refrigerant oil, POE oil, mineral oil, or fluorescent leak-detection dye directly into your AC system — no complicated machinery required.

Made in Mainland China.

Why You'll Love It

• Precision Injection: Features a 1/4" SAE female fitting that connects securely to 1/4" SAE male system ports (low side preferred), ensuring accurate, mess-free oil and dye delivery every time.
• Versatile Compatibility: Works seamlessly with all oil types (POE or mineral), all refrigerant types including R134a, and fluorescent dyes for leak detection — compatible with automotive AC and residential/home-office AC systems.
• Easy Manual Operation: The simple hand-held pump design gives you full control over injection volume, making it easy for both DIY enthusiasts and professional HVAC technicians to use.
• Durable Construction: Built from high-quality steel, brass, and rubber for long-lasting reliability under working pressures up to 30 kg — engineered for professional service use.
• Compact & Ready to Use: 30ml (1 oz) capacity with a 205mm blue filler tube, 153mm filling tube, and 49mm quick coupling — a complete, all-in-one injection solution right out of the box.

Specifications

• Material: Steel, Brass, Rubber
• Filler Capacity: 30 ml (1 oz)
• Blue Filler Tube Length: 205 mm
• Filling Tube Length: 153 mm
• Quick Coupling Length: 49 mm
• Working Pressure: ≤ 30 kg
• Interface: 1/4" SAE
• Item Weight: 265 g
• Application: Automotive AC, domestic/home AC, and other refrigeration equipment

What's in the Box

• 1 × 30ml Refill Cartridge / Filler
• 1 × Quick Coupler / Quick Coupling
• 1 × Blue Hose / Blue Filler Tube

Related Products You May Need

• 100-Pack Disposable Nitrile Gloves – Latex-Free, White, Oil-Proof — protect your hands during AC service work.
• 120ml Heavy-Duty Metal Rust Remover & Anti-Rust Spray — keep your tools and fittings corrosion-free.

For more information on safe handling of refrigerants and HVAC service practices, refer to the U.S. EPA Section 608 Refrigerant Management Program.

Frequently Asked Questions

Q: Is this A/C oil dye injector compatible with R134a automotive AC systems?

A: Yes! This injector is specifically designed to work with R134a refrigerant systems and includes a 1/4" SAE low-side quick coupler adapter that connects directly to R134a automotive AC low-side service ports. It is also compatible with other refrigerant types and works with both POE and mineral oils.

Q: Can I use this injector to add fluorescent dye for AC leak detection?

A: Absolutely. This tool is fully compatible with fluorescent UV leak-detection dyes, making it ideal for diagnosing refrigerant leaks in automotive and residential air conditioning systems. Simply fill the 30ml (1 oz) cartridge with your chosen dye, connect to the low-side port, and inject.

Q: Is this tool suitable for home/residential air conditioning systems as well as car AC?

A: Yes — the 1/4" SAE universal interface and compatibility with all oil and refrigerant types make it suitable for both automotive air conditioning and domestic/home-office AC and refrigeration equipment, giving you one versatile tool for multiple applications.

Q: What is the maximum working pressure this injector can handle?

A: This oil and dye injector is rated for working pressures up to 30 kg (approximately 294 kPa / ~43 psi), making it safe and effective for standard automotive and residential AC service conditions.