--- product_id: 236270187 title: "Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4\" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO" brand: "nakao" price: "€ 11.07" currency: EUR in_stock: false reviews_count: 8 url: https://www.desertcart.it/products/236270187-car-a-c-ac-oil-and-dye-injector-refrigerant-tools store_origin: IT region: Italy --- # 2 oz capacity for oil & dye injection 3000 psi burst pressure Universal 1/4" SAE threaded quick coupler Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO **Brand:** nakao **Price:** € 11.07 **Availability:** ❌ Out of Stock ## Summary > 🛠️ Inject Confidence, Diagnose Faster, Fix Smarter! ## Quick Answers - **What is this?** Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO by nakao - **How much does it cost?** € 11.07 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/products/236270187-car-a-c-ac-oil-and-dye-injector-refrigerant-tools) ## Best For - nakao enthusiasts ## Why This Product - Trusted nakao brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last, Engineered for Pros:** Durable aluminum alloy body with brass connectors ensures longevity and reliable field performance. - • **Compact & Portable, Ready Anywhere:** Lightweight 1.46 lb tool fits in your kit for on-the-go professional AC maintenance and leak detection. - • **Quick Snap-On Coupler, Instant Connection:** 13mm female quick coupler for fast, leak-proof attachment to low side ports—get the job done faster. - • **Universal Compatibility, One Tool Fits All:** Works seamlessly with R410A, R134A, R22, R12 and all major AC oils and fluorescent dyes. - • **Precision Injection, Zero Compressor Dependency:** Hand-turn design injects oil/dye without running compressor—save your system from costly damage. ## Overview The NAKAO 2 oz A/C Oil and Dye Injector is a professional-grade refrigerant tool designed for quick, precise injection of oil and fluorescent dye into automotive and home AC systems. Featuring a rugged aluminum alloy body, brass connectors, and a 1/4" SAE snap quick coupler, it supports multiple refrigerants including R410A, R134A, R22, and R12. With a max working pressure of 600 psi and burst pressure up to 3000 psi, this injector enables compressor-independent servicing, making it an essential tool for HVAC pros aiming to prevent compressor failure and detect leaks efficiently. ## Description Part name:A/C AC Oil and Dye Injector, A/C Hand Turn Oil, Dye Injector with R-134a, Oil and Dye Injector Refrigerant Tools, R134A Oil Injector ◆Instructions for use:Oil cylinder is filled with 2 ounces of refrigeration oil, check valve screwed onto cartridge and tightened. The inner and outer cylinders are tightened clockwise, and then a little 1/4 SAE threaded inner core is used to discharge a little air inside the blue tube. Connect the low-pressure port of the refrigeration system that needs to be refueled, and add the required amount of cooling oil to th inner and outer cylinders. ◆characteristic: 1)Material:aluminum alloy cylinder, rubber tube, pure copper connector 2)Tank Capacity: 1/4oz/7.5ml (Min)-2oz/60ml (Max). 3)Thread Size: 1/4" SAE 4)Rated working pressure: 3000 psi burst / 600 psi Max. working pressure. ◆Package Includes:1Pc x 2 OZ A/C Oil and Dye Injector with R134a Snap Quick Coupler ◆Precautions:When injecting dye into a pressurized system, always wear safety glasses and glove!Never breathe refrigerant vapor! ## Features - ◆Widely compatibility:This A/C Hand Turn Oil and Dye Injector with a Low Side Port Coupler ,quick snap-On 13 mm female connector to R134a manifold to work on car AC systems alike. Compatible with fluorescent dyes for leak monitoring, all oil types(POE, or mineral oil) and all home office AC and car AC systems. - ◆Large capacity: 2 oz Push-in type, A/C Oil and dye injector refrigerant tools with snap quick coupler.1/4 oz-2oz / 7.5ml-60ml. It does not depend on a working compressor to get the oil or fluorescent dye into the system, one shot may cure and save a sickened compressor caused by low oil. - ◆Easy to install：There are three parts： R134A snap quick coupler，check valve and oil cylinder。Firstly, check valve screwed onto cartridge and tightened. The inner and outer cylinders are tightened clockwise, and then a little 1/4 SAE threaded inner core is used to discharge a little air inside the blue tube. Connect the low-pressure port of the refrigeration system that needs to be refueled, and add the required amount of cooling oil to the inner and outer - ◆Wide range of functions: AC Oil and dye injector, hand turn filler injection tool , is a kind professional field service tool with aluminum alloy body, and brass connector on a piece of high pressure hose 1/4" female connector, make it compatible with most AC systems (if not, use CV23p for some 5/16" R410a systems). - ◆Providing high quality and professional parts with great service.if you have any questions, please feel free to contact us by email for more information!We will solve it for you in the first time! ## Technical Specifications | Specification | Value | |---------------|-------| | Material | Aluminum | | Brand | NAKAO | | Item dimensions L x W x H | 1 x 1 x 0.5 inches | | Exterior Finish | Brass | | Inlet Connection Size | 0.25 Inches | | Inlet Connection Type | threaded | | Outlet Connection Type | threaded | | Maximum Operating Pressure | 6E+2 Pound per Square Inch | | Number of Ports | 2 | | Outlet Connection Size | 0.25 Inches | | Valve Type | check valve | | Manufacturer | NAKAO | | UPC | 788497991833 | | Part Number | R-134A | | Item Weight | 1.46 pounds | | Product Dimensions | 1 x 1 x 0.5 inches | | Item model number | R-134A | | Item Package Quantity | 1 | | Batteries Included? | No | | Batteries Required? | No | ## Product Details - **Material:** Aluminum - **Brand:** NAKAO - **Item dimensions L x W x H:** 1 x 1 x 0.5 inches - **Exterior Finish:** Brass - **Inlet Connection Size:** 0.25 Inches - **Inlet Connection Type:** threaded - **Outlet Connection Type:** threaded - **Maximum Operating Pressure:** 6E+2 Pound per Square Inch - **Number of Ports:** 2 - **Outlet Connection Size:** 0.25 Inches ## Images ![Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO - Image 1](https://m.media-amazon.com/images/I/51OtW9YDfNL.jpg) ![Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO - Image 2](https://m.media-amazon.com/images/I/51EX0z3u8OL.jpg) ![Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO - Image 3](https://m.media-amazon.com/images/I/518LmvAXmzL.jpg) ![Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO - Image 4](https://m.media-amazon.com/images/I/61j5PwLw7JL.jpg) ![Car A/C AC Oil and Dye Injector Refrigerant Tools with Snap Quick Coupler 1/4" SAE,for R410A, R-134A, R22 and R12 Charger,2 OZ Refrigerant Hand Turn Screw-in Type Scale, by NAKAO - Image 5](https://m.media-amazon.com/images/I/61xHWL3WrOL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Effortless Lubrication for Your Air Conditioning System *by G***. on June 10, 2023* The AC Oil Injector has proven to be an invaluable tool in my air conditioning maintenance routine. With its ease of use and effective lubrication capabilities, this injector offers a seamless solution for keeping my AC system running smoothly and efficiently.One of the standout features of this oil injector is its user-friendly design. The injector is lightweight and ergonomically designed, allowing for comfortable handling and precise control. It features a convenient measuring scale that enables me to accurately gauge the amount of oil being injected into the AC system, ensuring the right lubrication dosage every time.Using the AC Oil Injector is a breeze. The injector is equipped with a sturdy and secure connection mechanism that easily attaches to the AC system's oil fill port. This hassle-free installation process saves time and effort, allowing me to swiftly introduce the oil into the system without any complications. The smooth operation of the injector ensures a seamless flow of oil, preventing any disruptions during the lubrication process.The injector's lubrication capabilities are highly effective, providing the necessary oil to keep the AC system's components running smoothly. The proper lubrication of the compressor and other moving parts is crucial in maintaining their longevity and efficiency. With the AC Oil Injector, I can easily introduce the right amount of oil into the system, ensuring optimal performance and reducing the risk of premature wear or damage.However, it is important to note that caution should be exercised when using this injector. The manufacturer recommends not exceeding 30ml of oil to be inserted into the system, as surpassing this limit could result in the tube becoming undone and potential leakage. It is crucial to adhere to the recommended dosage to avoid any issues and ensure the injector's longevity.Despite this limitation, the AC Oil Injector remains an extremely useful tool for maintaining and lubricating the AC system. The ability to introduce oil with precision and ease allows for efficient maintenance, helping to extend the lifespan of the AC components and ensuring optimal cooling performance. By incorporating this injector into my maintenance routine, I have experienced enhanced reliability and reduced the likelihood of costly AC repairs.In conclusion, the AC Oil Injector is a valuable asset for anyone seeking to maintain the performance and longevity of their air conditioning system. With its ease of use, precise lubrication capabilities, and effective maintenance results, this injector simplifies the process of introducing oil into the AC system. While it is important to adhere to the recommended oil dosage, the benefits of using this injector far outweigh any limitations. Embrace the convenience and reliability it offers, and keep your AC system running smoothly for years to come. ### ⭐⭐⭐⭐⭐ good product came out *by S*** on April 12, 2025* good product came out ### ⭐⭐⭐⭐ Good tool but not for pro's using it all the time *by P***G on January 30, 2024* I feel I got my money's worth. The threads are a little crunchy and fit and finish isn't top notch but overall it works as advertised and is plenty good enough for a shade tree mechanic like myself. I would recomend it for folks like me. I would not recomend it if you make a living working on airconditioning. Might last for years of hard servicde but might not. Confidence for high end users is low. Occasional use, buy it. Use often, think it through. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.it/products/236270187-car-a-c-ac-oil-and-dye-injector-refrigerant-tools](https://www.desertcart.it/products/236270187-car-a-c-ac-oil-and-dye-injector-refrigerant-tools) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-12*