---
product_id: 77344609
title: "K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required"
brand: "k-seal"
price: "$111621"
currency: COP
in_stock: true
category: "Automotive Parts and Accessories"
url: https://www.desertcart.co/products/77344609-k-seal-st5501-multi-purpose-one-step-permanent-coolant-leak
store_origin: CO
region: Colombia
---

# Mixes with all antifreeze, no flushing Permanent weld on radiators & blocks Repairs leaks in minutes K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required

**Brand:** k-seal
**Price:** $111621
**Availability:** ✅ In Stock

## Summary

> 🚗 Seal the deal fast—never let a leak slow your hustle!

## Quick Answers

- **What is this?** K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required by k-seal
- **How much does it cost?** $111621 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co](https://www.desertcart.co/products/77344609-k-seal-st5501-multi-purpose-one-step-permanent-coolant-leak)

## Best For

- k-seal enthusiasts

## Why This Product

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

## Key Features

- • **Durable & Tested:** Scientifically proven to withstand high combustion pressures without clogging.
- • **Instant Leak Fix:** Seals cracks and holes in just minutes, saving you costly repairs and downtime.
- • **Trusted Worldwide:** Over 8 million bottles sold, backed by ASTM D3147 university testing.
- • **Effortless Application:** Just shake, pour, and run—DIY simplicity for busy professionals.
- • **Universal Compatibility:** Works seamlessly with all antifreeze types—no draining or flushing needed.

## Overview

K-Seal ST5501 is a compact, scientifically tested coolant leak repair liquid that permanently seals cracks and holes in radiators, heater cores, and water pumps. Compatible with all antifreeze types, it requires no draining or flushing and repairs leaks up to 1/32 inch in minutes, making it a top-selling, hassle-free solution trusted by millions worldwide.

## Description

K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required

## Features

- REPAIRS IN MINUTES: Formulated to permanently weld radiators, including hard plastic aluminum heads and blocks in old and new cars. The only car radiator and gasket sealant university tested to meet ASTM D3147. Save time/money. US Bestseller
- SEALS CRACKS AND STOPS LEAKS: A DIY alternative to costly repairs, our coolant leak fix permanently seals cracks and holes! It quickly repairs your leaking radiator, freeze plug, heater core and water pump casing with no adverse impact on efficiency.
- POUR AND GO: Our cooling system sealer is easy to use: just shake the bottle, add to your radiator/overflow and run the engine! Unlike some traditional products, it mixes with all types of antifreeze, absolutely no draining or flushing required.
- SCIENTIFICALLY TESTED: Safe and effective, our cracked block repair can seal leaks up to 1/32 of an inch! Once cured, the repair withstands the high pressure of the combustion chamber, all without failing or clogging the cooling system.
- CUSTOMER SUPPORT: If K-Seal engine coolant leak stop doesn’t seal, the system might be over-pressurized. Check the Technical Specification section of this page for extra instructions for a successful repair. Over 8 million bottles sold worldwide!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B001QT9KO6 |
| Best Sellers Rank | #1,894 in Automotive ( See Top 100 in Automotive ) #1 in Cooling System Additives |
| Brand | K-Seal |
| Brand Name | K-Seal |
| Color | BLUE |
| Compatible Material | All Types of Antifreeze / Coolant and Other Additives |
| Customer Reviews | 4.3 out of 5 stars 12,864 Reviews |
| Global Trade Identification Number | 05060002968017 |
| Included Components | K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair |
| Item Dimensions | 3.5 x 1.5 x 4.5 inches |
| Item Form | Liquid |
| Item Height | 4.5 inches |
| Item Type Name | Engine Coolant Leak Repair |
| Item Weight | 0.26 Kilograms |
| Item dimensions L x W x H | 3.5 x 1.5 x 4.5 inches |
| Manufacturer | Solv-Tec |
| Material | Plastic |
| Material Type | Plastic |
| Style | Compact |
| Style Name | Compact |
| Surface Recommendation | Metal |
| UPC | 367157659506 812646010004 |
| Unit Count | 1.0 Count |
| Warranty Description | When K-Seal makes a repair we guarantee it will be permanent |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** K-Seal
- **Item Weight:** 0.26 Kilograms
- **Item dimensions L x W x H:** 3.5 x 1.5 x 4.5 inches
- **Material:** Plastic
- **Style:** Compact

## Images

![K-Seal ST5501 Multi-Purpose One Step Permanent Coolant Leak Repair, 8oz, Pour and Go, Mixes with All Antifreeze, No Flushing Required - Image 1](https://m.media-amazon.com/images/I/71Ukvu69xhL.jpg)

## Questions & Answers

**Q: will this work for leakey gaskets?**
A: It is designed to work on leaky gaskets.  If you have a small leak this product might be an easy and cheap fix.  It did not work for me.  Perhaps my leak was too large.  It is hard to tell.

**Q: Does it discolor the antifreeze? Thanks**
A: Unfortunately I can't say.  I have a GM vehicle that uses the orangish color engine coolant and it and this product are so close in color it's hard to say if it would discolor the usual green-colored coolant found in non-GM vehicles.  The other challenge is that I can only look at the coolant through an overflow reservoir and it's so dark when I look inside (I have to use an LED flashlight to see it adequately) that it would be hard to tell if there was any discoloration.

**Q: Can you use this in a 2013 escape?**
A: You can use it anywhere.  It's kept my 1998 Chevy Lumina going over 2 years with almost 178,000 miles on it!

**Q: can you mix this with barstop if you all ready put that in the radiator?**
A: I did mix this with Irontite All Weather Seal. Did the K-seal first. Irontite a week later. Just to be sure. Since they both said it can remain in the system. Two weeks, still good.

## Frequently Bought Together

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*Product available on Desertcart Colombia*
*Store origin: CO*
*Last updated: 2026-01-25*