---
product_id: 260384377
title: "K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz"
brand: "k&w"
price: "€ 78.77"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/260384377-k-and-w-401224-fiberlock-head-gasket-and-block-repair
store_origin: IE
region: Ireland
---

# Nanotech seals micro cracks Cool-X lowers engine temp 3 unique repair technologies K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz

**Brand:** k&w
**Price:** € 78.77
**Availability:** ✅ In Stock

## Summary

> 🛡️ Lock in your engine’s health with military-grade precision!

## Quick Answers

- **What is this?** K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz by k&w
- **How much does it cost?** € 78.77 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/260384377-k-and-w-401224-fiberlock-head-gasket-and-block-repair)

## Best For

- k&w enthusiasts

## Why This Product

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

## Key Features

- • **Cool-X Conditioner:** Reduces engine operating temperature, enhancing cooling system efficiency.
- • **Universal Compatibility:** Works seamlessly with all antifreeze types or plain water—no hassle, no guesswork.
- • **Nanotechnology Precision:** Permanently fixes even the tiniest cracks and crevices invisible to the naked eye.
- • **Lab-Proven Seal Performance:** Seals larger holes with less fluid loss than competitors, backed by ASTM D6107 testing.
- • **Military-Strength Fiber Web:** Creates a durable multi-layer seal over cracks for long-lasting repairs.

## Overview

K&W 401224 FiberLock is a 32 fl oz permanent head gasket and block repair solution featuring three advanced technologies—military-strength fibers, nanotechnology, and Cool-X conditioner. It effectively seals cracks and leaks in head gaskets, engine blocks, and cooling systems, compatible with all antifreeze types, and proven to reduce fluid loss and engine temperature.

## Description

Permanent pour 'n go head gasket & block repair compatible with all types of antifreeze. Repairs cooling system leaks w/3 unique technologies: military-strength fibers nanotechnology & Cool-X Conditioner-the ultimate solution for all coolant leaks.

## Features

- Easy Pour and Go Formula!
- Permanently fixes head gaskets, engine blocks, cooling systems, and cylinder heads.
- "Contains 3 unique technologies. Military-Strength Fibers create multi-layer repair over cracks with a web-like weave. Nanotechnology permanently fixes the smallest cracks and crevices. Cool-X Conditioner – lowers operating temperature as it circulates through cooling system."
- Seals larger holes with less fluid loss than competitive products as proven by lab test (ASTM D6107)
- Works with all antifreeze or plain water.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | CRC |
| Brand | K&W |
| Model | 401224-6 |
| Product Dimensions | 8.64 x 8.64 x 24.23 cm; 1.12 kg |
| Item model number | 401224 |
| Manufacturer Part Number | 401224 |
| Item Weight | 1.12 Kilograms |

## Product Details

- **Brand:** K&W
- **Colour:** gray
- **Shape:** Cylindrical
- **UPC:** 078372012242
- **Manufacturer:** CRC

## Images

![K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz - Image 1](https://m.media-amazon.com/images/I/61uA-QMSAsL.jpg)

## Questions & Answers

**Q: How do I clean this crap out of my radiator? Followed directions and now my head gasket doesn't leak but my radiator is totally clogged. Rad was new.**
A: It’s a 32 ounce bottle. If you’re putting it in a car you should only use 10 ounces. I wonder if you didn’t use a whole bottle, perhaps?
I added a whole bottle to my Kenworth and my problem was solved. 
I had a Radiator seam leak in a plastic/aluminum radiator

**Q: is there a limit to size of leak?**
A: I had a small leak on the head gasket it sealed it fine I believe it would seal a larger leak, be sure to take your thermostat out and flush the cooling system at least four times follow the directions on the bottle.

**Q: how clean it**
A: I wish to know that. I suggest all headache should go to the manufacturer because she did make function test except it does 'block the leaking'. I believe she does not know how to prevent the block of the coolant level sensor; how to prevent the trigger of high temperature warning from the temperature sensor of the engine...etc.

**Q: My 01 Civic only took 1/2 of the mixture (1qt sealant + 3qt water), even after burping - it took no more. Is this OK?**
A: run it

## Frequently Bought Together

- K&W 401224 FiberLock Head Gasket & Block Repair - 32 Fl Oz
- K&W 401232 Permanent Head Gasket & Block Repair with Nanotechnology - 32 Fl Oz
- CRC K&W 401016 Block Seal Permanent Metallic™ Block & Radiator Seal - 16 Oz

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**Shop now:** [https://www.desertcart.ie/products/260384377-k-and-w-401224-fiberlock-head-gasket-and-block-repair](https://www.desertcart.ie/products/260384377-k-and-w-401224-fiberlock-head-gasket-and-block-repair)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-24*