---
product_id: 49538899
title: "Block Test Kit Fluid for Head Gaskets & Cylinder Heads BT500"
brand: "worskop essentials online"
price: "€ 43.10"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.sk/products/49538899-block-test-kit-fluid-for-head-gaskets-and-cylinder-heads
store_origin: SK
region: Slovakia
---

# Works with petrol & diesel engines Detects combustion gases instantly Tests leaks in seconds Block Test Kit Fluid for Head Gaskets & Cylinder Heads BT500

**Brand:** worskop essentials online
**Price:** € 43.10
**Availability:** ✅ In Stock

## Summary

> ⏳ Don’t wait for engine failure—spot leaks before they strike!

## Quick Answers

- **What is this?** Block Test Kit Fluid for Head Gaskets & Cylinder Heads BT500 by worskop essentials online
- **How much does it cost?** € 43.10 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/49538899-block-test-kit-fluid-for-head-gaskets-and-cylinder-heads)

## Best For

- worskop essentials online enthusiasts

## Why This Product

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

## Key Features

- • **Instant Color Change:** Visual blue-to-yellow or red-to-yellow fluid shift signals combustion leaks immediately—no guesswork.
- • **Rapid Leak Detection:** Identify cracked blocks, head gaskets, and warped heads in seconds to avoid costly repairs.
- • **Prevent Engine Failure:** Catch hidden gasket and head issues early to maintain peak engine performance and save money.
- • **Dual-Fuel Compatibility:** Optimized for both petrol and diesel engines with specialized indicator fluids for precise diagnostics.
- • **Professional-Grade Accuracy:** Trusted by mechanics and DIY pros alike for reliable, on-the-spot engine health checks.

## Overview

The Block Test Kit Fluid BT500 is a fast-acting diagnostic fluid that detects exhaust gas leaks in radiator coolant, revealing cracked blocks, leaky head gaskets, and warped or cracked cylinder heads. Compatible with petrol and diesel engines (with optional sensitive fluid for diesel), it changes color instantly upon detecting combustion gases, enabling quick, accurate engine health assessments.

## Description

Block test Kit Fluid for the block tester kit that detects exhaust gases in the radiator and so checks for gasket damage, cracked or warped cylinder head. When fluid turns from blue to yellow a combustion leak is present. The kit is supplied with a bottle of test fluid which works well on petrol engines. For those who require a more sensitive fluid for checking diesel engines use L7573 indicator fluid, which changes from red to yellow in the presence of combustion gases.

## Features

- Tests in seconds for Cracked Blocks
- Tests in seconds for Leaky Head Gaskets
- Tests in seconds for Cracked Heads
- Tests in seconds for Warped Heads
- Works with Petrol and Diesel Vehicles

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B00TQTW3C4 |
| Best Sellers Rank | 14,802 in Automotive (See Top 100 in Automotive) 1 in Car Engine Cylinder Head Gaskets |
| Brand | Worskop Essentials Online |
| Customer Reviews | 4.7 4.7 out of 5 stars (58) 4.7 out of 5 stars |
| Date First Available | 18 Feb. 2015 |
| Guaranteed Software Updates Until | unknown |
| Manufacturer | Worskop Essentials Online |
| Manufacturer Part Number | T374103 |
| Manufacturer Reference | T374103 |

## Images

![Block Test Kit Fluid for Head Gaskets & Cylinder Heads BT500 - Image 1](https://m.media-amazon.com/images/I/4194cMKZzrL.jpg)
![Block Test Kit Fluid for Head Gaskets & Cylinder Heads BT500 - Image 2](https://m.media-amazon.com/images/I/412LHNg7nTL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does as it says
*by  on Reviewed in the United Kingdom 28 March 2023*

Does exactly as it says

### ⭐⭐⭐⭐ Head gasket check
*by  on Reviewed in the United Kingdom 9 March 2023*

Works a treat

### ⭐⭐⭐⭐⭐ Five Stars
*by  on Reviewed in the United Kingdom 25 December 2017*

Worked as expected.

## Frequently Bought Together

- Worskop Essentials Online Block Test Kit Fluid for Head Gaskets & Cylinder Heads BT500
- Block Tester BT-500 Combustion Leak Test Kit

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**Shop now:** [https://www.desertcart.sk/products/49538899-block-test-kit-fluid-for-head-gaskets-and-cylinder-heads](https://www.desertcart.sk/products/49538899-block-test-kit-fluid-for-head-gaskets-and-cylinder-heads)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-08-17*