---
product_id: 658995718
title: "RELD Professional Head Gasket Tester Combustion Leak Test Kit Detector CO2 with Box and 17oz CO2 Reaction Liquid"
brand: "reld"
price: "€ 253.99"
currency: EUR
in_stock: true
reviews_count: 5
category: "Reld"
url: https://www.desertcart.gr/products/658995718-reld-professional-head-gasket-tester-combustion-leak-test-kit-detector
store_origin: GR
region: Greece
---

# 17oz reactive liquid Universal adapter 25-55mm 5-min rapid test RELD Professional Head Gasket Tester Combustion Leak Test Kit Detector CO2 with Box and 17oz CO2 Reaction Liquid

**Brand:** reld
**Price:** € 253.99
**Availability:** ✅ In Stock

## Summary

> 🔍 Don’t guess—know your engine’s health in minutes!

## Quick Answers

- **What is this?** RELD Professional Head Gasket Tester Combustion Leak Test Kit Detector CO2 with Box and 17oz CO2 Reaction Liquid by reld
- **How much does it cost?** € 253.99 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/658995718-reld-professional-head-gasket-tester-combustion-leak-test-kit-detector)

## Best For

- reld enthusiasts

## Why This Product

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

## Key Features

- • **Accurate CO2 Sensing:** Detects combustion leaks with near 100% reliability using color-changing reactive liquid.
- • **Instant Leak Detection:** Diagnose head gasket issues in just 5 minutes—no mechanic needed.
- • **Universal Compatibility:** Fits cars, trucks, motorcycles, forklifts & more with a wide 25-55mm adapter range.
- • **Complete Kit Ready to Use:** Includes universal & bayonet adapters plus 17oz of blue reactive liquid for multiple tests.
- • **Cost-Effective DIY Solution:** Save time and money by testing your engine’s health at home with professional-grade precision.

## Overview

The RELD Professional Head Gasket Tester is a precision combustion leak detector that uses a universal adapter and 17oz of reactive liquid to identify CO2 leaks in liquid-cooled engines. Designed for quick, nearly 100% accurate testing across a wide range of vehicles, it empowers professionals and DIYers alike to diagnose head gasket integrity without costly mechanic visits.

## Description

The RELD tester is designed to detect damage to the cylinder head and gasket of combustion, liquid-cooled engines (petrol, diesel, LPG). The tester has the same working principle and the same efficiency as expensive testers and its price is affordable thanks to the innovative method of production.In case of a damaged gasket under the cylinder head or the cylinder head itself, a part of the exhaust gas, among other things contains the CO2, which enters the cooling system. The operating principle of the device is based on measuring the CO2 content. With an increased content of CO2, the liquid reacts with the gas and changes colour. The whole process takes only 5 minutes. Our tester offers almost 100% safety if the cylinder gasket isn't broken.One set contains:An universal adapterA bayonet adapter (diameter - 40, 47 i 55 mm)2x reactive liquid RELD with a capacity of 8.5oz (together 17oz)Instruction manual with steps to perform the test.We attach a universal adapter to our RELD tester which has a wide range of measurements (25-55 mm). Among other things, it can be controlled: cars, trucks, road tractors, excavators, motorcycles, forklifts.RELD reagent liquid is blue.If after carrying out all the steps described in the instructions for use the liquid has not changed colour and remains blue - it means that the gasket under the cylinder head and the cylinder head are in perfect condition.RELD reagent liquid is yellow or green.If the liquid has changed colour from blue to yellow or green - it means that the gasket under the cylinder head or the cylinder head is damaged.

Review: Pas de notice d'utilisation; Efficace; M'a permi de confirmer mon probleme de joint de culasse; Ne détecte pas (bien sûr) un probleme d'etancheité huile/Liquide refroidissement, seulement Etancheité LdR/chambre de combustion; Il faut bien le savoir.
Review: Top Qualität, schnelle Lieferung

## Features

- The original head gasket tester kit of the reputable brand “RELD”.
- Our combustion leak test kit ensures effectiveness of almost 100%.
- Fast and convenient. Most importantly you can check whether the head gasket of your car is fully functional without visiting the mechanic.
- If the head gasket looks damaged, you can check it yourself and save time and money.
- Thanks to the universal adapter with a wide measuring range (25-55 mm), we can check among other things: cars, trucks, road tractors, excavators, motorcycles and forklifts.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B083M9K4SK |
| Assembly Required | No |
| Best Sellers Rank | #55,286 in Car & Motorbike ( See Top 100 in Car & Motorbike ) #80 in Fuel System Tools |
| Brand | RELD |
| Country of Origin | USA |
| Customer Reviews | 4.4 4.4 out of 5 stars (653) |
| Date First Available | 19 September 2024 |
| Generic Name | Head Gasket Tester |
| Item Weight | 1 kg 570 g |
| Item model number | RELD_P500ml |
| Manufacturer | RELD |
| Manufacturer Part Number | RELD_P500ml |
| Model | Head Gasket Tester |
| Package Dimensions | 36.4 x 29.69 x 7.49 cm; 1.57 kg |

## Images

![RELD Professional Head Gasket Tester Combustion Leak Test Kit Detector CO2 with Box and 17oz CO2 Reaction Liquid - Image 1](https://m.media-amazon.com/images/I/71U48LwX47L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by L***C on 21 October 2025*

Pas de notice d'utilisation; Efficace; M'a permi de confirmer mon probleme de joint de culasse; Ne détecte pas (bien sûr) un probleme d'etancheité huile/Liquide refroidissement, seulement Etancheité LdR/chambre de combustion; Il faut bien le savoir.

### ⭐⭐⭐⭐⭐ Review
*by L***O on 13 December 2025*

Top Qualität, schnelle Lieferung

### ⭐⭐⭐⭐⭐ Review
*by R***T on 17 September 2025*

Very good kit. If you already have a coolant pressure tester kit with the quick release caps it fits them allowing you to connect this to more types of coolant reservoir tanks. Only issue is it comes with no instructions on what section to actually put the detection fluid in.

## Frequently Bought Together

- RELD Professional Head Gasket Tester Combustion Leak Test Kit Detector CO2 with Box and 17oz CO2 Reaction Liquid
- RELD Head Gasket Tester Kit Combustion Leak Detector for 50 Tests

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-02-28*