---
product_id: 49538903
title: "Block Test Kit for Petrol & Diesels Cylinder Heads & Gaskets BT500 Inc Fluid"
brand: "workshop essentials online"
price: "¥22953"
currency: JPY
in_stock: true
reviews_count: 3
category: "Workshop Essentials Online"
url: https://www.desertcart.jp/products/49538903-block-test-kit-for-petrol-and-diesels-cylinder-heads-gaskets
store_origin: JP
region: Japan
---

# Color-changing fluid indicator Works on petrol & diesel Tests leaks in seconds Block Test Kit for Petrol & Diesels Cylinder Heads & Gaskets BT500 Inc Fluid

**Brand:** workshop essentials online
**Price:** ¥22953
**Availability:** ✅ In Stock

## Summary

> 🔍 Catch leaks before they catch you!

## Quick Answers

- **What is this?** Block Test Kit for Petrol & Diesels Cylinder Heads & Gaskets BT500 Inc Fluid by workshop essentials online
- **How much does it cost?** ¥22953 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/49538903-block-test-kit-for-petrol-and-diesels-cylinder-heads-gaskets)

## Best For

- workshop essentials online enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Leak Detection:** Diagnose cracked blocks and gaskets in seconds, saving you time and costly repairs.
- • **Visual Leak Indicator:** Fluid changes color instantly on detecting combustion gases—blue to yellow for petrol, red to yellow for diesel.
- • **Dual-Fuel Compatibility:** Engineered for both petrol and diesel vehicles, ensuring versatile use across your fleet.
- • **User-Friendly & Reliable:** Sturdy, easy-to-use kit trusted by mechanics and DIY pros alike for accurate diagnostics.
- • **Cost-Effective Engine Health:** Avoid expensive engine damage with quick, on-the-spot testing that fits your budget.

## Overview

The Block Test Kit BT500 is a professional-grade diagnostic tool that quickly detects combustion leaks in cylinder heads and gaskets for both petrol and diesel engines. Using a color-changing fluid indicator, it reveals cracks, warps, and gasket failures within seconds, helping you prevent costly engine damage with fast, reliable testing.

## Description

Block test Kit 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.

Review: Does the job! - Sturdy build, fits well and gets the job done. Is easy to use too and not much more expensive than some more fallible testers. Respected tester (often seen on Youtube).
Review: Lasted less than a year - This has gone defective less than a year after purchasing. No response from seller when messaging and desertcart no any help either, save your money

## 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 | B00TQTZ254 |
| Best Sellers Rank | 20,156 in Automotive ( See Top 100 in Automotive ) 1 in Car Engine Cylinder Head Gaskets |
| Brand | Workshop Essentials Online |
| Customer Reviews | 3.7 3.7 out of 5 stars (12) |
| Date First Available | 18 Feb. 2015 |
| Manufacturer | Workshop Essentials Online |
| Manufacturer part number | T374100 |
| Manufacturer reference | T374100 |

## Images

![Block Test Kit for Petrol & Diesels Cylinder Heads & Gaskets BT500 Inc Fluid - Image 1](https://m.media-amazon.com/images/I/61ufJ0+UDeL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does the job!
*by P***J on 20 February 2019*

Sturdy build, fits well and gets the job done. Is easy to use too and not much more expensive than some more fallible testers. Respected tester (often seen on Youtube).

### ⭐ Lasted less than a year
*by S***R on 3 February 2021*

This has gone defective less than a year after purchasing. No response from seller when messaging and Amazon no any help either, save your money

### ⭐⭐⭐⭐⭐ Five Stars
*by B***. on 8 October 2016*

great bit of kit

## Frequently Bought Together

- Workshop Essentials Online Block Test Kit for Petrol & Diesels Cylinder Heads & Gaskets BT500 Inc Fluid
- GENERIC Swarfega Orange Hand Wash, Solvent-Free Heavy Duty Hand Cleaner with Natural Scrub and Moisturisers, Gentle on Skin 4L Cartridge
- Tate & Lyle Fairtrade Granulated Pure Cane Sugar (1Kg) - Pack of 6

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**Shop now:** [https://www.desertcart.jp/products/49538903-block-test-kit-for-petrol-and-diesels-cylinder-heads-gaskets](https://www.desertcart.jp/products/49538903-block-test-kit-for-petrol-and-diesels-cylinder-heads-gaskets)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-10*