---
product_id: 226588857
title: "Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator"
brand: "mastercool"
price: "¥111934"
currency: JPY
in_stock: true
reviews_count: 4
category: "Mastercool"
url: https://www.desertcart.jp/products/226588857-mastercool-53451-110-rechargeable-uv-leak-detection-kit-includes-high
store_origin: JP
region: Japan
---

# 2 oz refillable universal dye injector Dual power: rechargeable Li-Ion + AAA batteries 50W-equivalent UV flashlight power Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator

**Brand:** mastercool
**Price:** ¥111934
**Availability:** ✅ In Stock

## Summary

> 🔍 Illuminate leaks like a pro—don’t let hidden drips drain your day!

## Quick Answers

- **What is this?** Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator by mastercool
- **How much does it cost?** ¥111934 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/226588857-mastercool-53451-110-rechargeable-uv-leak-detection-kit-includes-high)

## 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

- • **Dual Power Flexibility:** Never get caught powerless—use rechargeable Li-Ion or AAA batteries included for ultimate convenience.
- • **Pro-Grade UV Precision:** Pinpoint leaks fast with a powerful UV light rivaling a 50W lamp for flawless diagnostics.
- • **Universal Dye Injector:** Inject oil, coolant, or refrigerant dye with a durable, refillable 2 oz injector featuring air purge and twist-handle control.
- • **Safety Meets Efficiency:** UV-enhancing glasses and detailed instructions ensure professional-grade results without compromising safety.
- • **All-in-One Leak Detection Kit:** Complete with dye remover, UV safety glasses, and 25 applications of universal dye—everything you need in one sleek case.

## Overview

The Mastercool 53451-110 Rechargeable UV Leak Detection Kit is a professional-grade diagnostic tool designed for automotive and HVAC systems. Featuring a high-intensity UV flashlight equivalent to a 50W lamp, dual power options (rechargeable Li-Ion and AAA batteries), and a 2 oz refillable universal dye injector, this kit enables fast, accurate detection of leaks in A/C, oil, coolant, fuel, and ATF systems. Complete with dye remover, UV safety glasses, and a durable carrying case, it’s engineered for efficiency, safety, and portability—backed by Mastercool’s U.S.-based support.

## Description

Mastercool 53451-110 Rechargeable UV Leak Detection Kit The Mastercool 53451-110 kit provides professional-grade UV leak detection for automotive and HVAC applications. Designed for use on A/C, engine, coolant, fuel, oil, and ATF systems. Kit Contents: - Rechargeable High-Intensity UV Flashlight (53518-UV) - Lithium-Ion Battery & 110V Charger - AAA Battery Holder + 3 AAA Batteries - 2 oz Refillable Dye Injector (53123) - 2 oz Universal Fluorescent Dye (25 applications) - 4 oz Dye Remover - UV-Enhancing Safety Glasses - 25 Service Information Labels - Durable Molded Carrying Case Key Benefits: ✔️ Detects A/C, engine, oil, fuel, coolant, and ATF leaks ✔️ Compact yet powerful UV light for accurate diagnostics ✔️ Multiple power options: rechargeable Li-Ion or AAA batteries ✔️ Refillable injector with purge capability and precise control ✔️ Molded case keeps everything organized and portable Important Use Notes: - Always wear safety glasses and gloves during dye injection - Purge air from injector hose before first use - Never operate UV light without UV safety glasses - Do not store batteries in high-temperature environments Built for professional technicians and backed by Mastercool’s U.S.-based support team.

Review: Great AC kit for a shop had everything you need to check for AC leaks.
Review: As described

## Features

- Causes serious eye irritation.
- Flammable liquid and vapour.
- May cause damage to organs through prolonged or repeated exposure.
- ✔️ Complete Leak Detection Kit – Includes rechargeable UV flashlight, 2 oz refillable dye injector, 2 oz concentrated universal dye (25 applications), dye remover, and safety glasses.
- ✔️ Professional-Grade UV Light – Powerful light output equivalent to a 50-watt UV lamp. Compatible with rechargeable Li-Ion or AAA batteries (both included) and 110V charger.
- ✔️ Refillable Injector for Universal Use – Durable 2 oz injector works with R134a and R12 A/C systems and supports oil, coolant, and refrigerant dye injection. Includes hose and service coupler.
- ✔️ Easy Dye Injection & Air Purge Process – Detailed instructions included. Injector features air purge steps and application control using twist-handle design.
- ✔️ Circulate, Detect & Confirm Leaks Fast – After injecting dye, run A/C system to circulate, then inspect with UV light to spot fluorescent leaks. Works on A/C, engine coolant, oil, ATF, and fuel systems.
- ✔️ Safety First Design – Includes UV-enhancing safety glasses. Always wear eye protection and gloves. Do not look directly into UV light. Avoid battery storage in high-heat environments.
- ✔️ Mastercool Quality & Support – Built for working professionals and backed by our responsive U.S.-based support team.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00I3GNKF0 |
| Batteries | 3 AAA batteries required. (included) |
| Best Sellers Rank | 1,006,159 in Automotive ( See Top 100 in Automotive ) 689 in Automotive Air Conditioning Line Repair Tools |
| Brand | Mastercool |
| Customer Reviews | 4.4 4.4 out of 5 stars (57) |
| Date First Available | 7 Feb. 2014 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Exterior | ABS plastic |
| Item Weight | 2.72 kg |
| Item model number | 53451-110 |
| Manufacturer | Mastercool |
| Manufacturer part number | 53451-110 |
| Model | 53451-110 |
| Product Dimensions | 15.24 x 27.94 x 22.86 cm; 2.72 kg |

## Images

![Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator - Image 1](https://m.media-amazon.com/images/I/71fKcDqldjL.jpg)
![Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator - Image 2](https://m.media-amazon.com/images/I/811bjWJGFYL.jpg)
![Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator - Image 3](https://m.media-amazon.com/images/I/81crZnMSCRL.jpg)
![Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator - Image 4](https://m.media-amazon.com/images/I/81hBrzfr0YL.jpg)
![Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator - Image 5](https://m.media-amazon.com/images/I/81yTjlBVGiL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by E***G on 22 July 2020*

Great AC kit for a shop had everything you need to check for AC leaks.

### ⭐⭐⭐⭐⭐ Review
*by H***R on 15 June 2018*

As described

### ⭐⭐ Review
*by A***M on 19 June 2024*

The UV light does not work and makes the whole kit useless if you don't buy a new one.

## Frequently Bought Together

- Mastercool 53451-110 Rechargeable UV Leak Detection Kit – Includes High-Intensity UV Flashlight, 2 oz Refillable Dye Injector, Universal Dye, Glasses & Accessories – A/C, Oil, Coolant Leak Locator
- InterDynamics Certified A/C Pro Car Air Conditioner Leak Detector Dye, Detection UV Dye Detects Leaks in R-12 and R-134A Condition Systems, 1 Oz
- Car A/C Repair Kit - O-Ring Set + AC Valve Cores | Fix Air Conditioning | + Removal & Install Tool | R12 & R134a | - Also for Tire Valve Stems!

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-01-23*