---
product_id: 260561535
title: "MASTERCOOL 82375 R134A Oil Injector, Silver"
brand: "mastercool"
price: "AR$225662"
currency: ARS
in_stock: true
reviews_count: 5
category: "Mastercool"
url: https://www.desertcart.com.ar/products/260561535-mastercool-82375-r134a-oil-injector-silver
store_origin: AR
region: Argentina
---

# Precision needle valve control Standard 1/2” ACME fittings 2 oz heavy-duty metal canister MASTERCOOL 82375 R134A Oil Injector, Silver

**Brand:** mastercool
**Price:** AR$225662
**Availability:** ✅ In Stock

## Summary

> 🔧 Inject with precision, service with confidence.

## Quick Answers

- **What is this?** MASTERCOOL 82375 R134A Oil Injector, Silver by mastercool
- **How much does it cost?** AR$225662 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/260561535-mastercool-82375-r134a-oil-injector-silver)

## Best For

- mastercool enthusiasts

## Why This Product

- Trusted mastercool brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Heavy-duty all-metal 2 oz canister designed for repeated, demanding use.
- • **Trusted by Pros:** Mastercool’s reliable design and U.S.-based support make it the go-to tool for A/C technicians.
- • **Precision Delivery:** Smooth, needle valve control ensures accurate fluid flow every time.
- • **Seamless Compatibility:** Fits standard R134a service tools with 1/2” ACME male x female fittings for hassle-free integration.
- • **Dual Injection Flexibility:** Inject oil or UV dye via vacuum suction or pressurized refrigerant for ultimate control.

## Overview

The MASTERCOOL 82375 is a professional-grade oil and UV dye injector designed specifically for R134a automotive A/C systems. Featuring a durable 2 oz metal canister and precision needle valve, it allows technicians to inject fluids either through vacuum suction or pressurized refrigerant. Its standard 1/2” ACME fittings ensure seamless compatibility with existing service tools, making it an essential, reliable tool for efficient A/C maintenance and leak detection.

## Description

Mastercool 82375 Standard Oil and Dye Injector for R134a Systems The Mastercool 82375 is a durable and easy-to-use tool for injecting refrigerant oil or UV dye into R134a automotive A/C systems. With its heavy-duty 2 oz metal canister and precise needle valve, this injector offers flexible operation using either system vacuum or refrigerant pressure. Technicians can add oil after evacuation by drawing it in through vacuum suction or inject it during the recharging process using system pressure. The built-in needle-style valve provides smooth, accurate control, and the tool connects easily between a manifold gauge set and charging hose using standard 1/2” ACME-M x 1/2” ACME-F fittings. Whether you're servicing a vehicle or performing routine maintenance, the 82375 is built to deliver reliable, controlled results — backed by Mastercool’s trusted support.

Review: Very good tool to own if you're DIY'ing your A/C work. Great way to add dye to the system to chase leaks with.
Review: Exactly what I needed to add to my home ac repair business now I am able to add oil into system with out having to fill the filler hose with oil a lot faster I just had to get adapters to be able to hook up tommy guages

## Features

- ✔️ Injects Refrigerant Oil or UV Dye – Designed to deliver oil or high volumes of UV leak detection dye into R134a automotive A/C systems.
- ✔️ Dual Injection Methods – Add fluid using vacuum suction after system evacuation or pressurized refrigerant during recharge.
- ✔️ Heavy-Duty 2 oz Metal Canister – Durable all-metal construction built to withstand repeated use in demanding service environments.
- ✔️ Precision Needle Valve Control – Built-in valve provides smooth, controlled delivery when used between your manifold gauge set and A/C hose.
- ✔️ R134a System Compatibility – Equipped with 1/2” ACME male x female fittings for seamless integration with standard R134a service tools.
- ✔️ Technician-Trusted Design – A reliable tool for professional A/C service techs, backed by Mastercool’s commitment to quality and U.S.-based support.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IKADRW |
| Brand | MASTERCOOL |
| Customer Reviews | 4.5 4.5 out of 5 stars (346) |
| Date First Available | 1 January 2024 |
| Exterior | Silver |
| Item Weight | 227 g |
| Item model number | 82375 |
| Manufacturer | Mastercool |
| Manufacturer Part Number | 82375 |
| Model | R134a 2 oz Oil/Dye Injector |
| Product Dimensions | 10.92 x 5.84 x 28.7 cm; 226.8 g |

## Images

![MASTERCOOL 82375 R134A Oil Injector, Silver - Image 1](https://m.media-amazon.com/images/I/51iaTBw8DxL.jpg)
![MASTERCOOL 82375 R134A Oil Injector, Silver - Image 2](https://m.media-amazon.com/images/I/71+cD7NVWeL.jpg)
![MASTERCOOL 82375 R134A Oil Injector, Silver - Image 3](https://m.media-amazon.com/images/I/914xwFn9XZL.jpg)
![MASTERCOOL 82375 R134A Oil Injector, Silver - Image 4](https://m.media-amazon.com/images/I/81Y+2My5nZL.jpg)
![MASTERCOOL 82375 R134A Oil Injector, Silver - Image 5](https://m.media-amazon.com/images/I/81Hkjl+RfVL.jpg)

## Questions & Answers

**Q: Wouldn't this product allow air to enter the system when pushing it in w/ refrigerant? Vacuuming seems like it wouldn't b/c air would be vacuumed out.**
A: If you install this oil injector in-line with the low side hose on your gauge set/manifold, you can pull vacuum on the hoses (remove air & moisture).  Then, close off your valve to vacuum.  Next, open up valve to your refrigerant tank, and charge the hoses with refrigerant.  Finally, open the valve on the oil injector to allow the refrigerant from your gauge set/manifold to push the oil into the vehicle's A/C low side port.  I do use a CPS MV5H3D 5-valve manifold (hi & low side hoses, refrigerant hose, vacuum hose, vacrometer all on one manifold) to limit the amount of things I have to assemble to do this (i.e., it's already set up, just connect hoses).

**Q: If you continue to run the pump, wouldn’t that pull the oil right back out?**
A: I'm not sure what you're asking, but this device allows you to add the proper type and quantity of oil to you HVAC system.  That oil doesn't just sit there in the compressor, it disperses throughout the refrigerant, thereby lubricating the system.

Honestly, my only concern with adding oil by this method is that it might dump too much oil too fast into the compressor and hydrolock the compressor.  Hasn't ever happened, and I've used this thing dozens of times now on different units.

Just make sure you're using the right oil and the right quantity.  Since you can never be sure how much/type oil is in a system you're topping off, I vacuum pump the system down and then add the oil.  Too much oil is as bad as too little.

My actual steps are; recover/remove the old 134A....fix the leak......pump down the system...add I can 134A....add oil....add 134A until the gauges read correctly for the ambient air temperature.

BTW; you will know you fixed the leak when the pump holds vacuum for 30 minutes (turned off).

**Q: Can this be used as a nu calgon flush kit?**
A: Dimitri, we're an auto repair shop and we sometimes use this for injection of oil/dye to the Auto A/C System through the low side port. Other times we use the automatic A/C equipment.  It's just a small metal container of very good quality with the proper connecting fittings at each end. I'm not sure what exactly is the nu calgon flush kit but we use a larger container which holds more ounces for flushing Automotive A/C system.

**Q: does this injector have 1/4" flare fittings or does it have 1/2" acne fittings?**
A: The connector with the turning knob valve is 1/2" (which is outlet)the other end connector is 1/4",which is inlet from manifold gauges.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***L on 30 January 2025*

Very good tool to own if you're DIY'ing your A/C work. Great way to add dye to the system to chase leaks with.

### ⭐⭐⭐⭐⭐ Review
*by M***E on 19 August 2017*

Exactly what I needed to add to my home ac repair business now I am able to add oil into system with out having to fill the filler hose with oil a lot faster I just had to get adapters to be able to hook up tommy guages

### ⭐⭐⭐⭐⭐ Review
*by W***E on 13 August 2017*

Very good quality. The valve works and is also of high quality. The body is machined, the threads are clean. I had no trouble using this item on several auto AC systems this summer. I would recommend it to anyone who needs a way to get oil into their AC system. On one car when I didn't have my gauges with me I just used a can of 134a to push the oil into the system. Worked perfectly that way.

## Frequently Bought Together

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*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-03-01*