---
product_id: 361189486
title: "A/C Oil and Dye Injector Refrigerant Tools 1/4\" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System"
brand: "relmon"
price: "$54.87"
currency: USD
in_stock: true
reviews_count: 8
url: https://www.desertcart.us/products/361189486-a-c-oil-and-dye-injector-refrigerant-tools-1-4
store_origin: US
region: United States of America
---

# 1/4" SAE quick snap coupler 2oz capacity for precise dosing Durable aluminum & brass build A/C Oil and Dye Injector Refrigerant Tools 1/4" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System

**Brand:** relmon
**Price:** $54.87
**Availability:** ✅ In Stock

## Summary

> 🧊 Cool precision meets pro durability — never miss a leak or drop!

## Quick Answers

- **What is this?** A/C Oil and Dye Injector Refrigerant Tools 1/4" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System by relmon
- **How much does it cost?** $54.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/361189486-a-c-oil-and-dye-injector-refrigerant-tools-1-4)

## Best For

- relmon enthusiasts

## Why This Product

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

## Key Features

- • **Snap-On Efficiency:** Quick 1/4" SAE female connector ensures seamless, tool-free attachment to R134a manifolds.
- • **Leak Detection Ready:** Compatible with fluorescent dyes to catch leaks early and keep your system running flawlessly.
- • **Universal Compatibility:** Works effortlessly with R134A, R410A, R22, R12 systems and all oil types including POE and mineral oils.
- • **Precision Dosing Mastery:** Inject up to 2oz of oil or dye with exact control for flawless AC maintenance.
- • **Rugged Professional Grade:** Crafted from corrosion-resistant aluminum alloy and brass for long-lasting field durability.

## Overview

The RELMON SP-03 A/C Oil and Dye Injector is a professional-grade tool designed for precise injection of oils and fluorescent dyes into automotive and home AC systems. Featuring a 2oz capacity, quick snap 1/4" SAE coupler, and a rugged aluminum and brass construction, it supports all major refrigerants (R134A, R410A, R22, R12) and oil types, ensuring reliable, efficient maintenance and leak detection.

## Description

A/C Oil and Dye Injector Refrigerant Tools 1/4" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System

## Features

- (Capacity of the Injector)2oz push-in type with 1/4oz/7.5ml -- 2oz/60ml.
- (Easy to Install and Use)This A/C hand turn oil and dye injector with a low side port coupler ,quick snap-on 13mm female connector to R134a manifold to work on car AC systems alike.
- (Widely Used)Compatible with fluorescent dyes for leak monitoring, all oil types(POE or mineral oil) and all home office AC and car AC systems.
- (High Quality)It's a kind of professional field service tool with aluminum alloy body and brass connector on a piece of high pressure hose 1/4 inch female connector, which is durable, wear-resistant and corrosion-resistant.
- (Package Included)1 x 2oz A/C oil and dye injector with R134A snap quick coupler. Note: Please wear safety goggles to avoid contact with refrigerant.
- Part number: SP-03
- Fit type: Vehicle Specific

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RELONG Supply |
| Brand | RELMON |
| Item Weight | 1.43 pounds |
| Package Dimensions | 9.09 x 3.54 x 2.4 inches |
| Item model number | SP-03 |
| Manufacturer Part Number | SP-03 |

## Images

![A/C Oil and Dye Injector Refrigerant Tools 1/4" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System - Image 1](https://m.media-amazon.com/images/I/51eIsh-IWUL.jpg)
![A/C Oil and Dye Injector Refrigerant Tools 1/4" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System - Image 2](https://m.media-amazon.com/images/I/51FgKaBJ8EL.jpg)
![A/C Oil and Dye Injector Refrigerant Tools 1/4" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System - Image 3](https://m.media-amazon.com/images/I/71BKcxKIDUL.jpg)
![A/C Oil and Dye Injector Refrigerant Tools 1/4" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System - Image 4](https://m.media-amazon.com/images/I/717TD-dDimL.jpg)
![A/C Oil and Dye Injector Refrigerant Tools 1/4" SAE Connector 2 OZ Hand Turn Screw with Snap Quick Coupler for R134A R410A R22 R12 System - Image 5](https://m.media-amazon.com/images/I/619Ht1kdHML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Did The Job With No Problem
*by M***4 on July 26, 2023*

This injecto is somewhat easy to use. Pour oil and die in after setting it to the ounces you want to inject. Screwing the cylinder out to desired setting is easy and quick. Screwing the cyclinder in to inject into a/c system can be somewhat straining. What I have found to make it easier: If replacing key components, especially after a system flush, inject oil after vacuum. Make sure you purge air out of the injector beforehand. Do this by propping the hose up and slowly twist the cylinder until you see oil or dye come out of the end, do this before connecting the coupling to it. I always run the vacuum pump for a few minutes on the low pressure side, just to make sure no air accidentally entered the system. I put my injector through a pressure test to see if the cylinder seals would leak, they did not. This tool is well constructed with clear ounce markings. It should last for many years. The seller also includes a spare o-ring.

### ⭐⭐⭐⭐⭐ Good Quality
*by J***N on June 18, 2024*

Works Great, heavy duty feel

### ⭐⭐⭐⭐ Succeeded in injecting dye marker
*by D***. on June 4, 2022*

I had never used one of these and it worked just fine. Surprisingly beefy and I believe the calibrations are etched, but I personally would measure PAG oil with a graduated vessel or a digital kitchen scale like I use for R134A. Even as one of the cheapest around it was hard for me to spend the dough, but I'm glad I did. Just unscrew the top, place oil/dye in, bleed it by turning barrel while holding cap until a bit comes out and press it on the LP port & turn the rest of way down. I did so with system under vacuum as I think there is controversy over injecting with system pressurized. Don't mess with the bottom cap, it's not meant to come off.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-01-26*