---
product_id: 60521746
title: "Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible"
brand: "mastercool"
price: "KD 67.79"
currency: KWD
in_stock: false
reviews_count: 5
category: "Mastercool"
url: https://www.desertcart.com.kw/products/60521746-mastercool-53351-professional-uv-leak-detection-kit-12v-high-intensity
store_origin: KW
region: Kuwait
---

# 50W 12V High-Intensity UV Light Universal Fluorescent Dye for multiple fluids Rugged Carry Case for ultimate portability Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible

**Brand:** mastercool
**Price:** KD 67.79
**Availability:** ❌ Out of Stock

## Summary

> 🔍 Illuminate leaks before they become costly disasters!

## Quick Answers

- **What is this?** Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible by mastercool
- **How much does it cost?** KD 67.79 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/60521746-mastercool-53351-professional-uv-leak-detection-kit-12v-high-intensity)

## 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

- • **Pro-Grade Portability:** Durable molded case keeps your kit organized and ready for on-the-go diagnostics anywhere, anytime.
- • **Safety Meets Efficiency:** Includes UV-enhancing glasses and dye remover for safe, clean, and professional leak detection.
- • **All-in-One Fluid Compatibility:** Detect refrigerant, coolant, oil, fuel, and ATF leaks with universal dyes and adapters for R134a & R12 systems.
- • **Trusted Mastercool Reliability:** Backed by U.S.-based customer support and engineered for technicians who demand accuracy and durability.
- • **Pinpoint Precision Leak Detection:** 50-watt UV light reveals leaks invisible to the naked eye, ensuring no drip goes unnoticed.

## Overview

The Mastercool 53351 Professional UV Leak Detection Kit is a comprehensive, portable solution designed for automotive and HVAC professionals. Featuring a powerful 50W 12V UV light, universal fluorescent dyes for multiple fluid types, and compatibility with both R134a and R12 systems, this kit enables precise detection of leaks in refrigerant, coolant, oil, fuel, and ATF systems. Packaged in a rugged carrying case with essential accessories like UV safety glasses and dye remover, it delivers professional-grade performance backed by U.S.-based customer support.

## Description

Mastercool 53351 Professional UV Leak Detection Kit The Mastercool 53351 kit provides a complete UV leak detection solution for automotive and HVAC technicians. Designed to locate leaks in A/C, coolant, fuel, oil, and ATF systems with precision and ease. Kit Contents: - High-Intensity Mini UV Light (12V / 50W) - 1 oz Universal Fluorescent Dye Cartridge (10 Applications) - Refillable Oil/Dye Injector Hose Assembly - R134a Coupler and R12 Adapter - 1 oz Engine Coolant Dye - 4 oz Dye Remover - UV-Enhancing Safety Glasses - 25 Service Information Labels - Durable Molded Carrying Case Key Benefits: ✔️ Detects refrigerant, coolant, oil, fuel, and ATF leaks ✔️ Compact and powerful 50W-equivalent UV light for accurate leak detection ✔️ Refillable dye injector compatible with R134a and R12 systems ✔️ Includes universal oil dye and dedicated coolant dye ✔️ Packaged in a rugged case for easy transport and field use Important Use Notes: - Always wear safety glasses and gloves when injecting dye - Purge air from the injector hose prior to first use - Do not operate the UV light without proper eye protection - Avoid touching the UV light lens during use – surface becomes hot Built for professionals who demand accuracy, portability, and performance — backed by Mastercool’s U.S.-based support team.

Review: This is a great set and the price is below $60 bucks. It is pretty straight forward and has usage label for each dye. If the dye happens to be same color as your coolant just go to local auto shop and buy alternate color. Do not put anything in your engine gas coolant or engine oil that is not recommended for the car. If you are not mechanically inclined leave it to the professionals. That said if you are buying this it is because you want to do it yourself. The kit works and you will be able to service cars a few times the best part of this kit is the UV light that connects right onto the battery. This means you never have to buy batteries and the cord is very long so you can see all over the engine. The kit comes with everything you see in the video and the major set back is to not have a case. The more expensive kits come with carrying case but that will run you extra $20 bucks or so. How to check for leaks 1. Your first step is visual inspection oil will flow down and backwards because of gravity. so start from the back of the car and move forward. 2. Look for highest point oil is coming from and that should be source of your leak 3. Clean the area of oil or coolant or what ever fluid is leaking with break parts cleaner and a paper towel or wd40 both work well for cleaning grease and oils. 4. Turn engine on again to see where fresh oil or coolant or leak is coming from this will help locate the exact spot for the leak. 5. If you still did not find leak manually then time for some uv dye. pour dye into fluid you are testing. (again you should clean area FIRST before putting in dye to get better results. be careful when injecting dye into pressurized systems so make sure to weak gloves and goggles. 6. Start the car after putting in dye and let the dye circulate through the system after 2-3 minutes turn engine off and connect your uv light and put on glasses and follow steps 1-2.and you should find your leak 7. Typical places for leaks are connection points hoses being cracked or broken, bolts being loose or seals being work, or maybe no leak at all just a sloppy mechanic who poured oil all over the place or didn't tighten oil filter. hope this advice helps if so please click the helpful link and let me know. and good luck with your leak job. this test works for any year make or model.
Review: The kit is set up to test for different kind of leaks. It worked really well. The UV light flashlight is very durable and well built. The only thing that’s not clear from the instructions is what dye to use for power steering fluid (it’s the oil one) and how much to put in. I poured half the little bottle and it’s more than plenty! Probably should have went with 1/4 or 1/8th of the bottle. You don’t even need the special glasses with the amount of fluid I used ;). I found my leak, it was a small hose clamp, saved myself $2500 worth of mechanical work. So definitely worth it.

## Features

- Causes serious eye irritation.
- Flammable liquid and vapour.
- Harmful to aquatic life with long lasting effects.
- May be fatal if swallowed and enters airways.
- May cause damage to organs through prolonged or repeated exposure.
- ✔️ All-In-One Leak Detection Kit – Quickly identify refrigerant, coolant, oil, ATF, and fuel leaks across automotive and HVAC systems with a complete, ready-to-use kit.
- ✔️ High-Intensity 12V UV Light – 50-watt inspection light delivers bright, focused UV illumination for pinpoint leak detection even in hard-to-see areas.
- ✔️ Universal Dye Coverage – Includes 1 oz cartridge of fluorescent dye for oil-based systems (10 applications) and 1 oz engine coolant dye for cooling system diagnostics.
- ✔️ Industry-Compatible Design – Comes with R134a hose and coupler, plus an R12 adapter for legacy system support. Works with most passenger vehicles and service equipment.
- ✔️ Includes Essential Accessories – Features 4 oz dye remover, 25 service labels for recordkeeping, and UV-enhancing safety glasses for technician protection.
- ✔️ Rugged Carry Case for Portability – Durable molded case keeps tools organized and ready for mobile technicians or shop use.
- ✔️ Mastercool Reliability & Support – Built for professional-grade performance with U.S.-based customer service from our US headquarters.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000IHJXHG |
| Best Sellers Rank | 133,309 in Automotive ( See Top 100 in Automotive ) 718 in Fuel System Tools |
| Brand | Mastercool |
| Customer Reviews | 4.5 4.5 out of 5 stars (421) |
| Date First Available | 7 Aug. 2012 |
| 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. |
| Item Weight | 998 g |
| Item model number | 53351-B |
| Manufacturer | Mastercool |
| Manufacturer part number | 53351-B |
| Product Dimensions | 24.77 x 17.15 x 8.26 cm; 997.9 g |

## Images

![Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible - Image 1](https://m.media-amazon.com/images/I/81LpDtYUKfL.jpg)
![Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible - Image 2](https://m.media-amazon.com/images/I/81ZmEYQ8PAL.jpg)
![Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible - Image 3](https://m.media-amazon.com/images/I/81jGvjvV13L.jpg)
![Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible - Image 4](https://m.media-amazon.com/images/I/81nb9rHDUdL.jpg)
![Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible - Image 5](https://m.media-amazon.com/images/I/81nxd3qKhiL.jpg)

## Questions & Answers

**Q: How long should i keep the engine running for UV dye to show up? And do i have to rev it or just idle it?**
A: Since I used the fluorescent dye to detect leaks from the power-steering system I had to drive my car around for approx 15 mins to actually see where it was leaking from. At idle I couldn't see any leaks. After the drive the leak was pretty obvious and the UV light picked it up right away.

**Q: are glasses  included?**
A: Yes. They are an amber/yellow color

**Q: does it come with dye for a/c**
A: Yes it comes with a/c dye

**Q: Can the kit be used to identify transmission leaks?**
A: transmission leak should  b readily identifiable by the red tint already in   the  fluid     to  b  sure   either  water blast   or at least  hose off under hood   all  oils    and then get on fairly clean  surface to  see if   red  oil  shows  up     keep   in mind  u could have   more than one  leak   and  some  people will  put  trans fluid in power  steering  complicating  matters

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by E***R on 2 October 2014*

This is a great set and the price is below $60 bucks. It is pretty straight forward and has usage label for each dye. If the dye happens to be same color as your coolant just go to local auto shop and buy alternate color. Do not put anything in your engine gas coolant or engine oil that is not recommended for the car. If you are not mechanically inclined leave it to the professionals. That said if you are buying this it is because you want to do it yourself. The kit works and you will be able to service cars a few times the best part of this kit is the UV light that connects right onto the battery. This means you never have to buy batteries and the cord is very long so you can see all over the engine. The kit comes with everything you see in the video and the major set back is to not have a case. The more expensive kits come with carrying case but that will run you extra $20 bucks or so. How to check for leaks 1. Your first step is visual inspection oil will flow down and backwards because of gravity. so start from the back of the car and move forward. 2. Look for highest point oil is coming from and that should be source of your leak 3. Clean the area of oil or coolant or what ever fluid is leaking with break parts cleaner and a paper towel or wd40 both work well for cleaning grease and oils. 4. Turn engine on again to see where fresh oil or coolant or leak is coming from this will help locate the exact spot for the leak. 5. If you still did not find leak manually then time for some uv dye. pour dye into fluid you are testing. (again you should clean area FIRST before putting in dye to get better results. be careful when injecting dye into pressurized systems so make sure to weak gloves and goggles. 6. Start the car after putting in dye and let the dye circulate through the system after 2-3 minutes turn engine off and connect your uv light and put on glasses and follow steps 1-2.and you should find your leak 7. Typical places for leaks are connection points hoses being cracked or broken, bolts being loose or seals being work, or maybe no leak at all just a sloppy mechanic who poured oil all over the place or didn't tighten oil filter. hope this advice helps if so please click the helpful link and let me know. and good luck with your leak job. this test works for any year make or model.

### ⭐⭐⭐⭐⭐ Review
*by R***Y on 23 April 2021*

The kit is set up to test for different kind of leaks. It worked really well. The UV light flashlight is very durable and well built. The only thing that’s not clear from the instructions is what dye to use for power steering fluid (it’s the oil one) and how much to put in. I poured half the little bottle and it’s more than plenty! Probably should have went with 1/4 or 1/8th of the bottle. You don’t even need the special glasses with the amount of fluid I used ;). I found my leak, it was a small hose clamp, saved myself $2500 worth of mechanical work. So definitely worth it.

### ⭐⭐⭐⭐⭐ Review
*by T***. on 7 July 2021*

Fantastic kit very useful for all different types of leak detection

## Frequently Bought Together

- Mastercool 53351 Professional UV Leak Detection Kit – 12V High-Intensity Light – Detects A/C, Coolant, Fuel, Oil, ATF Leaks – Includes Universal Dyes, Glasses, R134a & R12 Compatible
- Tracer Products TP34000601 UV Fluorescent Leak Detection Dye - Set of 6
- UV Fluid Leak Detection Dye, 8 Oz

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-09*