---
product_id: 56394672
title: "HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres"
brand: "hi-gear"
price: "RM216"
currency: MYR
in_stock: true
reviews_count: 13
category: "Hi Gear"
url: https://www.desertcart.com.my/products/56394672-hg9048s-insta-seal-head-gasket-fix-permanent-engine-block-sealer
store_origin: MY
region: Malaysia
---

# Heat resistant up to 200°C Fast-acting permanent seal Works on aluminum & cast iron engines HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres

**Brand:** hi-gear
**Price:** RM216
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it once, drive forever—no more engine drama!

## Quick Answers

- **What is this?** HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres by hi-gear
- **How much does it cost?** RM216 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/56394672-hg9048s-insta-seal-head-gasket-fix-permanent-engine-block-sealer)

## Best For

- hi-gear enthusiasts

## Why This Product

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

## Key Features

- • **Thermal Flexibility:** Expands and contracts with engine heat cycles, preventing hot spots and ensuring durability.
- • **Engine-Life Longevity:** Once sealed, the fix lasts the entire life of your engine—no more recurring leaks.
- • **Instant Leak Lockdown:** Seals large & microscopic cracks with ceramic micro-fibers and copper fines for a weld-like fix.
- • **Cooling System Friendly:** Formulated to protect and not harm your cooling system or antifreeze.
- • **Universal Engine Compatibility:** Safe and effective on all aluminum and cast iron engines, including radiators and heater cores.

## Overview

Hi-Gear HG9048s Insta-Seal is a 236ml advanced ceramic-microfiber and copper-based liquid sealant designed to permanently fix leaks in head gaskets, cracked cylinder heads, radiators, and heater cores. Compatible with all aluminum and cast iron engines, it withstands temperatures over 200°C and protects your cooling system while providing a durable, weld-like seal that lasts the life of your engine.

## Description

Hi-Gear Insta-Seal quickly and permanently seals large and small leaks in blown head gaskets, cracked cylinder heads, heater matrix, core plugs and leaking radiators in all types of aluminum and cast iron engines. Insta-Seal is safe for use with all types of antifreeze. Insta-Seal will not harm the cooling system when used correctly. Hi-Gear Insta-Seal is formulated with ceramic micro-fibres and copper fines of varying size to ensure a fast and permanent seal of holes or cracks in the cooling system. The ceramic micro-fibers and copper flow into cracks so fine that they cannot be seen by the human eye to form an extra-strong seal within the crack or hole. The crack or hole is actually filled, from top to bottom, with the ceramic micro-fibers and copper forming a complete “weld”. Even through the ceramic micro-fibres and copper are fine enough to flow into the smallest of cracks, they interweave to seal even the largest of cracks and holes. Once the “weld' is complete Hi-Gear Insta-Seal lasts the life of the engine. Copper not only aids in creating an extra-strong seal, but it also conducts heat across the crack or holes thereby eliminating hot spots that normally form on the edges of a crack or hole. Copper is very friendly to all components in the engine. Hi-Gear Insta-Seal is formulated to expand and contract with the temperature changes of the engine and radiator during start-up, running and shutdown and is heat resistant to over 200 degrees C.

Review: Seems to have worked - No more water loss or mayonnaise in the oil filler cap !
Review: It works - Had what I believed was a head casket issue on the Jaguar X type. Previously took it to a garage that treated it with an unknown substance. The casket held for about 3 months before I had an issue again. Decided to do it myself with this product. So far so good, very little water loss, but not sure if that is the casket or just natural loss. Time will tell if this is a long term solution.

## Features

- Causes serious eye irritation.
- Causes skin irritation.
- Harmful if swallowed.
- May cause an allergic skin reaction.
- May cause damage to organs (kidney) through prolonged or repeated exposure (if swallowed).
- Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 236 millilitres
- Hi-Gear Insta-Seal quickly and permanently seals large and small leaks in blown head gaskets
- Works on cracked cylinder heads, heater matrix, core plugs and leaking radiators in all types of aluminum and cast iron engines
- Hi-Gear Insta-Seal will not harm the cooling system when used correctly
- Once the 'weld' is complete Hi-Gear Insta-Seal lasts the life of the engine

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005VXFBIC |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 51,087 in Automotive ( See Top 100 in Automotive ) 354 in Fillers, Adhesives & Sealants |
| Colour | clear |
| Customer Reviews | 3.8 3.8 out of 5 stars (137) |
| Date First Available | 12 Dec. 2015 |
| Item Package Quantity | 1 |
| Item Weight | 272 g |
| Item model number | HG9048s |
| Manufacturer | Hi-Gear |
| Material | Plastic |
| Part number | HG9048S |
| Product Dimensions | 5.72 x 5.72 x 18.1 cm; 272.16 g |
| Style | Liquid ceramic-microfiber and copper sealant |

## Product Details

- **Brand:** Hi-Gear
- **Item dimensions L x W x H:** 5.7 x 5.7 x 18.1 centimetres
- **Item weight:** 272 g
- **Material:** Plastic
- **Style:** Liquid ceramic-microfiber and copper sealant

## Images

![HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres - Image 1](https://m.media-amazon.com/images/I/51xvmpfhAPL.jpg)

## Questions & Answers

**Q: After you use it you have to change the motor oil my oil  look like milk ?**
A: A water cooling system leak into the interior of the engine mixing with the oil lubricating system produces a yellowish off white foam.  Either a cracked block or head or a leaking head gasket are the usual suspect for this.  I even have had a badly leaking cooling tube under the intake manifold on a 4.6 Liter Ford that no coolant leak additive could fix--a removal of intake manifold and replacement of tube was the only fix.  It is very common for Aluminum head/block warpage due to even a one time overheating to cause head gasket leakage that only engine teardown and having the warp leveled can fix.  For reasonably small leaks, I have used radiator sealer to stop them.

**Q: Do you have to flush the radiator first?**
A: Yes, I would flush it first, then add the installation seal.

**Q: Does it says for how many cylinders it will work per .oz used**
A: Didn't work on 6 cylinder for me.

**Q: Will this work on a cracked block and water cooled manifold in a closed Mercruiser 5.7 liter V8 boat engine?  Thanks.**
A: It depends on how big the crack is.  If very big probely not.  My experience with with water manifold not likely.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Seems to have worked
*by J***S on 27 July 2024*

No more water loss or mayonnaise in the oil filler cap !

### ⭐⭐⭐⭐ It works
*by A***U on 2 October 2020*

Had what I believed was a head casket issue on the Jaguar X type. Previously took it to a garage that treated it with an unknown substance. The casket held for about 3 months before I had an issue again. Decided to do it myself with this product. So far so good, very little water loss, but not sure if that is the casket or just natural loss. Time will tell if this is a long term solution.

### ⭐ Didn't work
*by C***. on 2 January 2022*

It didn't work all it done was block my pipes and exploded out of my expansion tank all over my car and engine bay I bought steal seal like a neon green bottle it worked first go don't buy this

## Frequently Bought Together

- Hi-Gear HG9048s Insta-Seal Permanent Block Sealer - 8 fl. oz.
- K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required
- K-Seal ST3501 Pour and Go Head Gasket Sealer, 16oz, Permanent Repair for Blown Head Gaskets, Cracked Heads and Blocks

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*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-17*