---
product_id: 56394672
title: "Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres"
brand: "hi-gear"
price: "KSh9186"
currency: KES
in_stock: true
url: https://www.desertcart.co.ke/products/56394672-hi-gear-hg9048s-insta-seal-head-gasket-fix-permanent-engine
store_origin: KE
region: Kenya
---

# Heat resistant to 200°C+ Works on aluminum & cast iron engines Seals cracks & leaks permanently Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres

**Brand:** hi-gear
**Price:** KSh9186
**Availability:** ✅ In Stock

## Summary

> 🛡️ Seal it once, drive worry-free forever!

## Quick Answers

- **What is this?** Hi-Gear HG9048s Insta-Seal Head Gasket Fix Permanent Engine Block Sealer - 236 millilitres by hi-gear
- **How much does it cost?** KSh9186 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.ke](https://www.desertcart.co.ke/products/56394672-hi-gear-hg9048s-insta-seal-head-gasket-fix-permanent-engine)

## 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 temperature changes without damage
- • **Universal Compatibility:** Safe for all antifreeze types and works on aluminum and cast iron components
- • **Permanent Engine Protection:** Seals blown head gaskets and cracks for the life of your engine
- • **Advanced Ceramic-Copper Formula:** Microfibers and copper fines create a heat-conductive, ultra-strong weld
- • **Easy Application, Long-Term Peace of Mind:** Quickly fixes leaks in radiators, heater matrix, core plugs, and more

## Overview

Hi-Gear HG9048s Insta-Seal is a 236ml permanent engine block sealer that quickly fixes leaks in head gaskets, cracked cylinder heads, radiators, and more. Its unique ceramic microfiber and copper formula forms a heat-resistant, flexible weld that lasts the life of your engine without harming cooling systems. Compatible with all antifreeze types and suitable for aluminum and cast iron engines, it’s the ultimate quick fix for professional-grade engine maintenance.

## 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.

## Features

- 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 |
|---------------|-------|
| Manufacturer | Hi-Gear |
| Part number | HG9048S |
| Item Weight | 272 g |
| Product Dimensions | 5.72 x 5.72 x 18.1 cm; 272.16 g |
| Item model number | HG9048s |
| Colour | clear |
| Style | Liquid ceramic-microfiber and copper sealant |
| Material | Plastic |
| Item Package Quantity | 1 |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Material:** Plastic
- **Brand:** Hi-Gear
- **Style:** Liquid ceramic-microfiber and copper sealant
- **Item weight:** 0.6 Pounds
- **Item dimensions L x W x H:** 5.7 x 5.7 x 18.1 centimetres

## Images

![Hi-Gear 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.

## 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 Kenya*
*Store origin: KE*
*Last updated: 2026-02-10*