---
product_id: 296348336
title: "Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye"
brand: "a/c pro"
price: "€ 22.79"
currency: EUR
in_stock: true
reviews_count: 5
category: "A/C Pro"
url: https://www.desertcart.ie/products/296348336-interdynamics-374cs-certified-a-c-pro-oil-and-fuel-systems
store_origin: IE
region: Ireland
---

# UV leak detection technology One-time application for quick results Compatible with all petroleum-based lubricants Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye

**Brand:** a/c pro
**Price:** € 22.79
**Availability:** ✅ In Stock

## Summary

> 🔦 Illuminate hidden leaks before they become costly headaches!

## Quick Answers

- **What is this?** Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye by a/c pro
- **How much does it cost?** € 22.79 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/296348336-interdynamics-374cs-certified-a-c-pro-oil-and-fuel-systems)

## Best For

- a/c pro enthusiasts

## Why This Product

- Trusted a/c pro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by pros:** Certified A/C Pro quality ensures reliable, accurate leak detection every time.
- • **Save time and money:** One application quickly identifies leak sources, avoiding costly guesswork and repairs.
- • **Drive with confidence:** Detect leaks early to maintain peak vehicle performance and avoid unexpected breakdowns.
- • **Universal compatibility:** Works seamlessly with engine oil, transmissions, power steering, and gas/diesel fuel systems.
- • **Pinpoint leaks with UV precision:** Professional-grade dye reveals hidden oil and fuel leaks instantly under black light.

## Overview

Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye is a professional-grade, one-application UV dye designed to detect leaks in engine oil, transmissions, power steering, and fuel systems. Compatible with all petroleum-based lubricants, it helps pinpoint leak sources quickly and accurately under black light, saving time and repair costs.

## Description

Certified A/C Pro Oil And Fuel Systems UV Dye is for use in engine oil, transmissions, power steering systems, and gas or diesel fuel systems to help determine where there might be a leak. Includes one application of oil and fuel system UV leak detection dye. Certified A/C Pro Oil and Fuel Systems UV Dye is a professional grade leak detection dye that is compatible with all weights of petroleum based lubricant.

Review: Works great pinpointed oil leak! Have had a slow oil leak on our 2002 Grand Am for the past 4 years. Nothing serious just an annoying constant oil leak In our driveway. Was leaking about 1 quart between each oil change. At first was convinced it was the pan so changed the oil pan gasket. This did not solve the leak nor did a stop leak product. So purchased this DYE put it in and went for about a 50KM drive. Brought it home, jacked it up and had a look in the dark using a black-light flashlight. Lots of oil around the pan is why I originally thought that was the leak source. Using the black light, the DYE outlined that the leak was coming from a much higher spot and flowng down on to the pan giving the illusion that the oil pan was at fault when in fact it was not. Got my answer and found the leak source
Review: Used it for thr first time yesterday and discovered the source of my oil leak quickly . You will need a black light but they are cheap. Recommended .

## Features

- One application of oil and fuel system UV leak detection dye
- For use in engine oil, transmissions, power steering systems and gas/diesel fuel systems
- Compatible with all weights of petroleum-based lubricant
- Helps locate leaks
- Professional grade

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B002M4G24U |
| Are batteries included? | No |
| Best Sellers Rank | #75,678 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #111 in Fuel System Tools |
| Brand | A/C Pro |
| Colour | Oil and Fuel Systems UV Dye |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,309) |
| Date First Available | 24 April 2014 |
| Generic Name | Auto A/C Recharge |
| Global Trade Identification Number | 00047876013741 |
| Included Components | QUEST Auto A/C Recharge |
| Item Weight | 45.4 g |
| Item model number | 374CS |
| Manufacturer | QUEST |
| Material | Plastic |
| Measuring Range | Broad (Universal) |
| Model number | 374CS |
| Mounting Type | Flange Mount |
| Net Quantity | 1.0 Ounce |
| Number of Memory Sticks | 1 |
| Output Type | Digital |
| Specific Uses For Product | Automotive leak detection |
| Style | Compatible |
| UPC | 047876013741 |
| Upper Temperature Rating | 250 Degrees Fahrenheit |

## Product Details

- **Brand:** A/C Pro
- **Item Weight:** 45 g
- **Material:** Plastic
- **Measuring Range:** Broad (Universal)
- **Style:** Compatible

## Images

![Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye - Image 1](https://m.media-amazon.com/images/I/417SxPtmkkL.jpg)
![Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye - Image 2](https://m.media-amazon.com/images/I/41W5sgTmrVL.jpg)
![Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye - Image 3](https://m.media-amazon.com/images/I/41xICHhbBHL.jpg)
![Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye - Image 4](https://m.media-amazon.com/images/I/61+VNRJnlBL.jpg)
![Interdynamics 374CS Certified A/C Pro Oil and Fuel Systems UV Dye - Image 5](https://m.media-amazon.com/images/I/61BIGw3L+tL.jpg)

## Questions & Answers

**Q: Will i need to change the oil after adding the product or can i run it 3k miles?**
A: You probably don't need to but....I personally would add the UV dye right before you need a oil change. That way you can drive your vehicle for however long. Probably a good 2 days, drain the oil/ fix the problem, then refill with fresh oil.

**Q: do you really need the yellow goggle to see the dye?**
A: I had no problems seeing the dye without the glasses.

**Q: can this dye be mixed with mineral oil and used in smoke test machines**
A: The answer is yes.  I used it in my smoke machine to test an engine in my 1996 BMW Z3 1.9.  It worked fine.

**Q: So i just pour all of this bottle into engine oil and look with blacklight?**
A: Thats exactly what I did to locate a hard to find oil leak. BTW: to get a clean read, you will need to clean the engine beforehand, add the dye and then drive 20 miles or so to locate the leak.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by M***D on 2 November 2025*

Works great pinpointed oil leak! Have had a slow oil leak on our 2002 Grand Am for the past 4 years. Nothing serious just an annoying constant oil leak In our driveway. Was leaking about 1 quart between each oil change. At first was convinced it was the pan so changed the oil pan gasket. This did not solve the leak nor did a stop leak product. So purchased this DYE put it in and went for about a 50KM drive. Brought it home, jacked it up and had a look in the dark using a black-light flashlight. Lots of oil around the pan is why I originally thought that was the leak source. Using the black light, the DYE outlined that the leak was coming from a much higher spot and flowng down on to the pan giving the illusion that the oil pan was at fault when in fact it was not. Got my answer and found the leak source

### ⭐⭐⭐⭐⭐ Review
*by H***T on 28 April 2024*

Used it for thr first time yesterday and discovered the source of my oil leak quickly . You will need a black light but they are cheap. Recommended .

### ⭐ Review
*by A***Q on 24 August 2024*

Does not identify leak

## Frequently Bought Together

- InterDynamics Certified Auto Pro Oil and Fuel System UV Dye Leak Detection for Cars & Trucks & More, 1 Oz, 374CS, Universal
- REALHUNLEE Air Conditioner UV Dye Leak Detector, Pro Auto Oil AC UV Dye Leak Test Detection Tool Kit 68 LED A/C UV Flashlight Detector with Protective Glasses

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-25*