---
product_id: 624707692
title: "Hromee Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 or M14 Thread for GM Chevy LS1 LS3 LS6"
brand: "hromee"
price: "E£ 2803"
currency: EGP
in_stock: true
reviews_count: 8
category: "Hromee"
url: https://www.desertcart.com.eg/products/624707692-hromee-engine-air-valve-holder-and-cylinder-leakage-testing-assistant
store_origin: EG
region: Egypt
---

# Pressurizes cylinder up to 110psi for valve sealing M12/M14 thread fit for GM Chevy LS engines Durable brass & rubber for corrosion & abrasion resistance Hromee Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 or M14 Thread for GM Chevy LS1 LS3 LS6

**Brand:** hromee
**Price:** E£ 2803
**Availability:** ✅ In Stock

## Summary

> 🔩 Seal it tight, fix it right — the pro’s secret weapon for Chevy engines!

## Quick Answers

- **What is this?** Hromee Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 or M14 Thread for GM Chevy LS1 LS3 LS6 by hromee
- **How much does it cost?** E£ 2803 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/624707692-hromee-engine-air-valve-holder-and-cylinder-leakage-testing-assistant)

## Best For

- hromee enthusiasts

## Why This Product

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

## Key Features

- • **Universal GM Chevy Fit:** Compatible with LS1, LS3, LS6 engines using M12 or M14 spark plugs
- • **Precision Valve Sealing:** Hold valves closed with compressed air to replace seals without dismantling
- • **Quick & Efficient Setup:** 1/4" NPT quick coupler for fast air compressor connection, saving valuable workshop time
- • **Rugged Build for Longevity:** High-pressure resistant brass fittings and anti-wear rubber tubing ensure durability
- • **Leakage Detection Made Easy:** Diagnose cylinder air tightness by listening for leaks during compression stroke

## Overview

The Hromee Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool is engineered for GM Chevy LS1, LS3, and LS6 engines, featuring M12 and M14 threaded fittings. It pressurizes cylinders up to 110psi to hold valves closed, enabling valve seal replacement without engine teardown. Built with durable brass connectors and abrasion-resistant rubber tubing, it offers reliable leakage detection and quick compressor hookup, making it an essential tool for professional-grade engine maintenance.

## Description

Buy Hromee Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 or M14 Thread for GM Chevy LS1 LS3 LS6: Valve Train Tools - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Fits a big or small block Chevy - I used this on a small block Chevy 350 and it worked like a charm. No leaks or issues. It helped me replace my valve seals a lot quicker than the old way of doing it.
Review: Very handy tool. - Works perfectly

## Features

- Pressurizes the cylinder to help hold valves closed with compressed air. So The oil seal of the valve can be replaced without dismantling.
- When the cylinder is in the compression stroke. If the air tightness of the engine is not good enough, you can hear the continuous leakage of air. Diagnosis of damaged parts by listening to the leak position.
- Used for the gasonline engine cylinder with M14 or M12 spark plug, have to move out spark plug before install this tool. It can be used for gasoline engines, such as cars, trucks, boats, motorcycles, ATVs, etc. Not to be used in diesel engine vehicles.
- Adopt with durable rubber tube and brass fitting connectors, anti wear, high pressure resistance, anti corrosion and abrasion. Air pressure avoid the valve to falling into the combustion chamber.
- 300Psi/20Bar pressure tube with M12 and M14 thread to NPT, install the joint on the position of the spark plug. There have a 1/4" NPT air compressor air pump quick coupler male plug for easy work. Note the working pressure range 30psi≤P≤110psi(2bar≤P≤8bar).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CQLXV7LS |
| Best Sellers Rank | #31,348 in Automotive ( See Top 100 in Automotive ) #19 in Engine Valve Train Tools |
| Brand | Hromee |
| Customer Reviews | 4.4 4.4 out of 5 stars (173) |
| Date First Available | December 19, 2023 |
| Item Weight | 6 ounces |
| Item model number | HR4145 |
| Manufacturer | Hromee |
| Manufacturer Part Number | HR4145 |
| Model | HR4145 |
| Product Dimensions | 6 x 4 x 1.5 inches |

## Images

![Hromee Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 or M14 Thread for GM Chevy LS1 LS3 LS6 - Image 1](https://m.media-amazon.com/images/I/61hnze3jnaL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fits a big or small block Chevy
*by A***M on July 22, 2025*

I used this on a small block Chevy 350 and it worked like a charm. No leaks or issues. It helped me replace my valve seals a lot quicker than the old way of doing it.

### ⭐⭐⭐⭐⭐ Very handy tool.
*by D***2 on October 18, 2025*

Works perfectly

### ⭐⭐⭐⭐⭐ Quality, quality!
*by J***R on November 24, 2025*

Great tool.

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*Product available on Desertcart Egypt*
*Store origin: EG*
*Last updated: 2026-02-28*