---
product_id: 461386360
title: "Inline Spark Plug Tester, Straight Boot Engine Ignition Tester Light Easy to Use, Small Armature Diagnostic Detector Tool for Automotive, Car, Lawnmower, Motorcycles, Internal External Engine"
brand: "blau grun"
price: "£5.54"
currency: GBP
in_stock: true
reviews_count: 8
category: "Blau Grun"
url: https://www.desertcart.co.uk/products/461386360-inline-spark-plug-tester-straight-boot-engine-ignition-tester-light
store_origin: GB
region: United Kingdom
---

# High-intensity neon spark indicator Universal fit for all spark plug engines Rust & corrosion resistant premium materials Inline Spark Plug Tester, Straight Boot Engine Ignition Tester Light Easy to Use, Small Armature Diagnostic Detector Tool for Automotive, Car, Lawnmower, Motorcycles, Internal External Engine

**Brand:** blau grun
**Price:** £5.54
**Availability:** ✅ In Stock

## Summary

> ⚡ Diagnose your engine’s spark in a flash — don’t get left in the dark!

## Quick Answers

- **What is this?** Inline Spark Plug Tester, Straight Boot Engine Ignition Tester Light Easy to Use, Small Armature Diagnostic Detector Tool for Automotive, Car, Lawnmower, Motorcycles, Internal External Engine by blau grun
- **How much does it cost?** £5.54 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/461386360-inline-spark-plug-tester-straight-boot-engine-ignition-tester-light)

## Best For

- blau grun enthusiasts

## Why This Product

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

## Key Features

- • **Durable Build:** Premium plated shaft & acetate housing withstand extreme temps & corrosion 🛡️
- • **User-Friendly Design:** Straight boot and compact size for effortless, on-the-go engine troubleshooting
- • **Instant Spark Diagnosis:** Plug in between spark plug & wire, see ignition status in real-time ⚡
- • **Universal Compatibility:** Works seamlessly with cars, motorcycles, lawnmowers & more 🔧
- • **Trusted by Pros & DIYers:** Top-rated ignition tester with 4.4 stars and thousands of happy users

## Overview

The Inline Spark Plug Tester by BLAU GRUN is a compact, easy-to-use diagnostic tool designed for all internal and external combustion engines. Featuring a high-intensity neon bulb indicator, it instantly reveals ignition spark status by connecting inline between the spark plug and wire. Built with corrosion-resistant plated shaft and durable acetate housing, it performs reliably across extreme temperatures. Perfect for professionals and DIY enthusiasts alike, this tester supports cars, motorcycles, lawnmowers, and more, making engine troubleshooting fast, precise, and hassle-free.

## Description

Buy Inline Spark Plug Tester, Straight Boot Engine Ignition Tester Light Easy to Use, Small Armature Diagnostic Detector Tool for Automotive, Car, Lawnmower, Motorcycles, Internal External Engine: Ignition Testers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: nice tool, comes in handy - Very handy lil took to check for spark. Works good.
Review: Not a bad investment - This inline spark plug tester is a total game-changer for diagnosing ignition problems. It’s simple to use—just plug it in between the spark plug and the ignition wire, and you can instantly see if the spark is firing correctly. The visual indicator is clear and easy to read, making troubleshooting fast and stress-free. It’s a great tool to have, whether you’re a professional mechanic or a DIYer working on small engines, cars, or lawn equipment. For the price and functionality, you really can’t beat it. Highly recommend!

## Features

- 【Wide Application】: The inline spark plug tester is a must have diagnostic tool for any engine with a spark plug, it fit for all internal and external combustion engines, cars, trucks, motorcycles, lawnmowers, chainsaws, trimmers, snow-blowers, generators engines etc. Spark plug tester apply to any household, business, mechanic, industrial and commercial spark plug use in engine.
- 【Premium Materials】: The probe of this spark tester is made of high quality plated shaft, the optical housing is made of environmental friendly acetate plastic, and rubber straight jacket and cable. High quality materials are resistant to rust and corrosion, even in high and low temperature environments.
- 【Easy to Use】: Easily determine which cylinder is causing issues with this spark plug test light; Simply connect the spark detector spark plug tool between the spark plug and the plug wire then start the engine; If sparks are being sent, the in line spark tester will mirror the spark by lighting up; If checking a no start condition, have a friend crank the engine so you can watch for indications of a spark.
- 【Light Indication】: The spark plug engine ignition test kit is equipped with a high intensity neon bulb inside, which makes it easy to know if the ignition wires are intact by flashing. By light indicator shows of spark plug engine ignition tester to determine which cylinder is causing the issue and track down the exact cause.
- 【Excellent Customer Service】: We are dedicated to researching in-car products to improve driving safety and comfort, bringing you a pleasant driving experience. Should you have any questions, please do not hesitate to let us know. We are ready to help you!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B8VHX5DD |
| Best Sellers Rank | #22,174 in Automotive ( See Top 100 in Automotive ) #3 in Ignition Testers |
| Brand | BLAU GRUN |
| Color | White/1PCS |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,173) |
| Date First Available | August 6, 2022 |
| Item Weight | 2.18 ounces |
| Item model number | 069TS |
| Manufacturer | BLAU GRUN |
| Manufacturer Part Number | BLAU GRUN-Plug Tester |
| Measurement Type | Spark tester |
| Model | Spark Plug Tester |
| Package Dimensions | 6.5 x 3.74 x 0.94 inches |
| Power Source | Corded Electric |
| Specification Met | CE, ETL, RoHS, UL |
| UPC | 750110188142 |

## Product Details

- **Brand:** BLAU GRUN
- **Color:** White/1PCS
- **Item Weight:** 0.06 Kilograms
- **Power Source:** Corded Electric
- **Specification Met:** CE, ETL, RoHS, UL

## Images

![Inline Spark Plug Tester, Straight Boot Engine Ignition Tester Light Easy to Use, Small Armature Diagnostic Detector Tool for Automotive, Car, Lawnmower, Motorcycles, Internal External Engine - Image 1](https://m.media-amazon.com/images/I/51diOjd3imL.jpg)

## Available Options

This product comes in different **Color** options.

## Questions & Answers

**Q: Where can I buy a replacement bulb?  The bulb shows 220/240 V**
A: https://www.amazon.com/Lisle-20680-Replacement-Inline-Tester/dp/B001PN8760
Amazon Inline spark plug tester replacement bulb - Lisle 20680

**Q: Will it work with yamaha Outboard motors?**
A: It will work with any spark plug

## Customer Reviews

### ⭐⭐⭐⭐⭐ nice tool, comes in handy
*by P***L on February 7, 2026*

Very handy lil took to check for spark. Works good.

### ⭐⭐⭐⭐⭐ Not a bad investment
*by V***2 on July 11, 2025*

This inline spark plug tester is a total game-changer for diagnosing ignition problems. It’s simple to use—just plug it in between the spark plug and the ignition wire, and you can instantly see if the spark is firing correctly. The visual indicator is clear and easy to read, making troubleshooting fast and stress-free. It’s a great tool to have, whether you’re a professional mechanic or a DIYer working on small engines, cars, or lawn equipment. For the price and functionality, you really can’t beat it. Highly recommend!

### ⭐⭐⭐⭐ Nice price.
*by A***N on October 19, 2025*

Tested it on lawn mower plug. Works! Hard to see in direct sunlight. Best to do in shade.

## Frequently Bought Together

- Inline Spark Plug Tester, Straight Boot Engine Ignition Tester Light Easy to Use, Small Armature Diagnostic Detector Tool for Automotive, Car, Lawnmower, Motorcycles, Internal External Engine
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**Shop now:** [https://www.desertcart.co.uk/products/461386360-inline-spark-plug-tester-straight-boot-engine-ignition-tester-light](https://www.desertcart.co.uk/products/461386360-inline-spark-plug-tester-straight-boot-engine-ignition-tester-light)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-19*