---
product_id: 11686229
title: "Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK"
brand: "bar's leaks"
price: "€ 101.77"
currency: EUR
in_stock: true
reviews_count: 13
category: "Bar's Leaks"
url: https://www.desertcart.sk/products/11686229-bars-leaks-block-seal-head-gasket-sealant-pack-of-4
store_origin: SK
region: Slovakia
---

# Heat resistant like fireproof clothing Permanent ceramic-type seal for cracks Aramid fiber strength like bulletproof vest Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK

**Brand:** bar's leaks
**Price:** € 101.77
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal before your engine feels the heat!

## Quick Answers

- **What is this?** Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK by bar's leaks
- **How much does it cost?** € 101.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/11686229-bars-leaks-block-seal-head-gasket-sealant-pack-of-4)

## Best For

- bar's leaks enthusiasts

## Why This Product

- Trusted bar's leaks brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted by Pros & DIYers Alike:** Over 700 reviews with a 4.2-star rating prove this is the go-to sealant for serious engine care.
- • **Versatile Engine Compatibility:** Works seamlessly on gasoline, diesel, turbocharged, cast iron, and aluminum engines—your all-in-one leak solution.
- • **Stops Coolant Leaks Permanently:** Locks cracks and blown gaskets with a ceramic bond that withstands engine heat and pressure for long-lasting reliability.
- • **Easy DIY Fix Before Expensive Repairs:** Detailed instructions make it simple to save your engine and avoid costly mechanic bills or junkyard trips.
- • **Bulletproof Strength, Fireproof Protection:** Aramid and refractory fibers create an ultra-durable, heat-resistant seal that outperforms traditional gasket repairs.

## Overview

Bar's Leaks Block Seal Head Gasket Sealant is a powerful, fiber-reinforced formula designed to permanently repair blown head gaskets, cracked heads, and coolant leaks in a wide range of engines. Combining aramid and refractory fibers, it forms a ceramic-type seal that withstands extreme heat and pressure. Ideal for vehicles that can idle without overheating, this product offers a cost-effective, easy-to-use alternative to expensive repairs or engine replacement.

## Description

For most vehicles, this is the last chance before going to a junk yard or paying an expensive repair bill. This product contains a blend of aramid and refractory fibers giving the strength of a bullet proof vest and the heat resistance of fire-proof clothing. As these particles penetrate a crack or the blown head gasket area, they lock together and bond forming a hard permanent ceramic type seal. Your vehicle is a good candidate for this product if it can idle for 20 minutes without overheating or having to add coolant. Works effectively on cast iron or aluminum blocks & heads. Detailed instructions on back booklet label take you through each step of using the product.

Review: Really pleased with how well this works - I have a 3 cylinder, diesel, 19 horsepower landscape tractor that blew a head gasket (or head, or block, don't know) and was getting exhaust gasses into the radiator water. This caused over pressure and would blow all the coolant out of the radiator in just a few minutes. Since I've taken off diesel heads before and found them to be cracked or a crack in the block, I didn't want to go that route as a first effort. I want to use the tractor before winter comes darn it. I ordered this from desertcart, and followed the directions to the letter. Since I didn't have a spark plug to remove (remember, it's a diesel), I opened the compression release for each cylinder until I found out which one was giving me trouble and left that one open during the first part of the process. Net, this stuff worked. While the tractor was running I held the end of the overflow hose in a jar of water and watched the bubbles come out. In a few minutes there were less bubbles, a few minutes more, even less. I ran the tractor for a little longer than the instructions and then drained and refilled it. There were a few bubbles at first, as compared to a blast of compressed exhaust gasses when I started, and those went away after driving the tractor around the lot a little. It's only been a few weeks since I did this, so I don't know how long the fix will last. However, I got a bottle of the other Bar's product Block Seal 1109 and put half a bottle in the radiator to take care of any residual problem. Haven't had to add water at all and there are no bubbles in the overflow bottle. If you can't fix it right by replacing the proper parts, get this stuff; it actually does what it says it will.
Review: Does it work?yes - Fixed leak and is running 90% better

## Features

- REPAIRS BLOWN HEAD GASKETS: This product contains a blend of aramid and refractory fibers giving the strength of a bullet proof vest and the heat resistance of fire-proof clothing. As these particles penetrate a crack or the blown head gasket area, they lock together and bond forming a hard permanent ceramic type seal.
- REPAIRS CRACKED HEADS & BLOCKS: Your vehicle is a good candidate for this product if it can idle for 20 minutes without overheating or having to add coolant.
- REPAIRS INTAKE GASKET LEAKS: Works on gasoline engines, turbocharged engines, diesel engines, and heavy duty engines.
- STOPS ALL COOLANT LEAKS: Works effectively on cast iron or aluminum blocks & heads.
- Head Gasket Sealant is NOT COMPATIBLE with antifreeze and must only be added to the cooling system after ALL ANTIFREEZE has been flushed and removed.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00BYS6SV2 |
| Customer Reviews | 4.2 4.2 out of 5 stars (710) |
| Item Weight | 1.4 pounds |
| Item model number | 1100-4PK |
| Manufacturer | Bar's Leaks |
| Package Dimensions | 8.31 x 7.48 x 4.25 inches |

## Images

![Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK - Image 1](https://m.media-amazon.com/images/I/41-3loUbFOL.jpg)
![Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK - Image 2](https://m.media-amazon.com/images/I/41FKclXnanL.jpg)
![Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK - Image 3](https://m.media-amazon.com/images/I/51SFF6fN3zL.jpg)
![Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK - Image 4](https://m.media-amazon.com/images/I/51feKgJT1tL.jpg)
![Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK - Image 5](https://m.media-amazon.com/images/I/51oj5pWkAdL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Really pleased with how well this works
*by D***N on April 19, 2012*

I have a 3 cylinder, diesel, 19 horsepower landscape tractor that blew a head gasket (or head, or block, don't know) and was getting exhaust gasses into the radiator water. This caused over pressure and would blow all the coolant out of the radiator in just a few minutes. Since I've taken off diesel heads before and found them to be cracked or a crack in the block, I didn't want to go that route as a first effort. I want to use the tractor before winter comes darn it. I ordered this from Amazon, and followed the directions to the letter. Since I didn't have a spark plug to remove (remember, it's a diesel), I opened the compression release for each cylinder until I found out which one was giving me trouble and left that one open during the first part of the process. Net, this stuff worked. While the tractor was running I held the end of the overflow hose in a jar of water and watched the bubbles come out. In a few minutes there were less bubbles, a few minutes more, even less. I ran the tractor for a little longer than the instructions and then drained and refilled it. There were a few bubbles at first, as compared to a blast of compressed exhaust gasses when I started, and those went away after driving the tractor around the lot a little. It's only been a few weeks since I did this, so I don't know how long the fix will last. However, I got a bottle of the other Bar's product Block Seal 1109 and put half a bottle in the radiator to take care of any residual problem. Haven't had to add water at all and there are no bubbles in the overflow bottle. If you can't fix it right by replacing the proper parts, get this stuff; it actually does what it says it will.

### ⭐⭐⭐⭐⭐ Does it work?yes
*by S***K on August 1, 2025*

Fixed leak and is running 90% better

### ⭐⭐⭐⭐⭐ Works
*by W***M on April 6, 2025*

Scotty Kilmer used this stuff on his youtube channel. Worked for me too. I still made sure my radiator was clean as possible. If you have rust in your cooling system it will not work.

## Frequently Bought Together

- Bar's Leaks Block Seal Head Gasket Sealant (Pack of 4),1100-4PK
- Bar's Leaks 1109 Liquid Copper Block Seal, Intake and Radiator Stop Leak, 18 oz. | One Step, Safe for All Cooling Systems
- Bar's Leaks Liquid Aluminum Radiator and Heater Core Stop Leak. 6 Pack,1186-6PK

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-02*