---
product_id: 606052338
title: "THERMAGASKET Extreme Duty Head Gasket Sealer & Block Repair for Large Gas Diesel Engines - 48oz Kit for Blown Head Gaskets & Cracked Blocks/Heads, 10 Min Fast-Acting Permanent Seal, 7+ Gallon Capacity"
brand: "generic"
price: "R6333"
currency: ZAR
in_stock: true
url: https://www.desertcart.co.za/products/606052338-thermagasket-extreme-duty-head-gasket-sealer-and-block-repair-large
store_origin: ZA
region: South Africa
---

# High-temp, extreme pressure resistant 10 min fast-acting seal 7+ gallon large engine capacity THERMAGASKET Extreme Duty Head Gasket Sealer & Block Repair for Large Gas Diesel Engines - 48oz Kit for Blown Head Gaskets & Cracked Blocks/Heads, 10 Min Fast-Acting Permanent Seal, 7+ Gallon Capacity

**Brand:** generic
**Price:** R6333
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the deal in 10 minutes — because your engine deserves the extreme! 🛠️

## Quick Answers

- **What is this?** THERMAGASKET Extreme Duty Head Gasket Sealer & Block Repair for Large Gas Diesel Engines - 48oz Kit for Blown Head Gaskets & Cracked Blocks/Heads, 10 Min Fast-Acting Permanent Seal, 7+ Gallon Capacity by generic
- **How much does it cost?** R6333 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/606052338-thermagasket-extreme-duty-head-gasket-sealer-and-block-repair-large)

## Best For

- generic enthusiasts

## Why This Product

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

## Key Features

- • **Rapid 10-Minute Fix:** Get your heavy-duty engine sealed and back on the road faster than ever.
- • **Built for Big Engines:** Specifically engineered for large gas and diesel engines over 7 gallons—no more one-size-fits-all fixes.
- • **Safe on All Materials:** Non-clogging, non-damaging formula works on aluminum, alloys, plastics, and cast iron.
- • **DIY Savings Powerhouse:** Avoid costly mechanic bills with a professional-grade repair you can do yourself.
- • **Permanent High-Temp Seal:** Withstands extreme heat and pressure to stop leaks for good, not just a quick patch.

## Overview

THERMAGASKET Extreme Duty Head Gasket Sealer is a fast-acting, permanent repair solution designed for large gas and diesel engines (7+ gallons). Its dual-part formula seals blown head gaskets, cracked blocks, and heads within 10 minutes, resisting high temperatures and pressures. Safe for all engine materials, it prevents future leaks and saves thousands in mechanic costs by enabling professional-grade repairs at home.

## Description

Built for Big Jobs: The 7+ Gallon Engine SealantStop engine trouble in its tracks with THERMAGASKET Extreme Duty Head and Block Sealant. Designed specifically for large-capacity gas and diesel engines (7+ gallons), our powerful head gasket leak sealer creates a permanent, high-temperature seal that tackles the root cause of failure - whether it's a blown head gasket, a cracked engine block, or a cracked head. In just 10 minutes, it forms a robust barrier that withstands extreme pressure, preventing costly coolant loss and protecting your engine from catastrophic overheating damage.The Safe, Smart, and Simple Head Gasket FixOur non-clogging head gasket repair sealant is safe for all engine materials, including aluminum, cast iron, alloys, and plastic components. The simple, two-part system requires no special tools or expertise; just shake, pour, and let the dual-action formula work its magic. It intelligently seeks out hot spots and leaks, bonding permanently to seal them and even preventing future failures.The Extreme Heavy Duty Choice to Repair Your Head Gasket:✓ Permanently seals blown head gaskets and cracked blocks in large gas and diesel engines. ✓ Sets in just 10 minutes for a fast-acting, high-temperature repair that holds under pressure. ✓ Saves thousands of dollars by avoiding a costly engine tear-down and mechanic labor. ✓ Safe for all engine materials, including aluminum and plastic, with a non-clogging formula.Take Control and Drive with ConfidenceTHERMAGASKET empowers you to reclaim your vehicle's performance and your peace of mind. This isn't just a quick fix; it's a long-term investment in your engine's health, saving you from repair bills and lengthy garage visits. Whether you're a professional mechanic or a dedicated DIYer, this head gasket stop leak sealant delivers expert results right from your garage.

## Features

- Fix Major Leaks in Under 10 Minutes: Our advanced, dual-part gasket sealant sets rapidly to create a permanent, high-temperature seal on head gaskets, engine blocks, and cracked heads, getting your heavy-duty engine back to work fast
- Engineered for Large Gas & Diesel Engines: Designed for tough jobs and large-capacity engines (7+ gallons), our extreme-duty head gasket sealant handles the demands and high pressures that ordinary stop leaks can't
- Saves You Thousands in Mechanic Bills: This blown head gasket sealer delivers a permanent fix from your own garage, saving you massive time and money
- Prevents Future Leaks: Our heat-responsive head gasket seal actively seeks out and seals the hottest areas of your engine, not just fixing the current leak but also eliminating the conditions that cause new ones
- 100% Safe for All Engine Materials: Trust the non-clogging, non-damaging formula that is safe for use on all metals, aluminum, alloys, and plastics, ensuring a reliable gasket fix without risking engine damage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | RxAuto |
| Brand | Generic |
| Model | THERMAGASKET |
| Item model number | THERMAGASKET |
| Manufacturer Part Number | THERMAGASKET |

## Images

![THERMAGASKET Extreme Duty Head Gasket Sealer & Block Repair for Large Gas Diesel Engines - 48oz Kit for Blown Head Gaskets & Cracked Blocks/Heads, 10 Min Fast-Acting Permanent Seal, 7+ Gallon Capacity - Image 1](https://m.media-amazon.com/images/I/61A4uLk8axL.jpg)
![THERMAGASKET Extreme Duty Head Gasket Sealer & Block Repair for Large Gas Diesel Engines - 48oz Kit for Blown Head Gaskets & Cracked Blocks/Heads, 10 Min Fast-Acting Permanent Seal, 7+ Gallon Capacity - Image 2](https://m.media-amazon.com/images/I/814pajB02-L.jpg)
![THERMAGASKET Extreme Duty Head Gasket Sealer & Block Repair for Large Gas Diesel Engines - 48oz Kit for Blown Head Gaskets & Cracked Blocks/Heads, 10 Min Fast-Acting Permanent Seal, 7+ Gallon Capacity - Image 3](https://m.media-amazon.com/images/I/81bLB-AWADL.jpg)
![THERMAGASKET Extreme Duty Head Gasket Sealer & Block Repair for Large Gas Diesel Engines - 48oz Kit for Blown Head Gaskets & Cracked Blocks/Heads, 10 Min Fast-Acting Permanent Seal, 7+ Gallon Capacity - Image 4](https://m.media-amazon.com/images/I/81jLJnHS8eL.jpg)

## Frequently Bought Together

- THERMAGASKET Extreme Duty Head Gasket Sealant - Large Capacity Engine Head & Block Repair - Fast-Acting 10-Minute Fix - 48oz Dual-Part Formula for Gas & Diesel Engines - Radiator & Heater Leak Stopper
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**Shop now:** [https://www.desertcart.co.za/products/606052338-thermagasket-extreme-duty-head-gasket-sealer-and-block-repair-large](https://www.desertcart.co.za/products/606052338-thermagasket-extreme-duty-head-gasket-sealer-and-block-repair-large)

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-02-10*