---
product_id: 253648056
title: "GST96300EN06 Radiator Sealer Permanently Seals Leaks Treatment (300 Ml)"
brand: "stp"
price: "€ 16.65"
currency: EUR
in_stock: true
reviews_count: 10
category: "Stp"
url: https://www.desertcart.fi/products/253648056-gst96300en06-radiator-sealer-permanently-seals-leaks-treatment-300-ml
store_origin: FI
region: Finland
---

# Lubricates water pump Seals leaks permanently Includes corrosion inhibitors GST96300EN06 Radiator Sealer Permanently Seals Leaks Treatment (300 Ml)

**Brand:** stp
**Price:** € 16.65
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal the deal on radiator leaks before they seal your fate!

## Quick Answers

- **What is this?** GST96300EN06 Radiator Sealer Permanently Seals Leaks Treatment (300 Ml) by stp
- **How much does it cost?** € 16.65 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/253648056-gst96300en06-radiator-sealer-permanently-seals-leaks-treatment-300-ml)

## Best For

- stp enthusiasts

## Why This Product

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

## Key Features

- • **Smooth Operator:** Lubricates the water pump for enhanced performance and longevity.
- • **UK-Made Quality:** Proudly manufactured in the UK, trusted by professionals and enthusiasts alike.
- • **Rust & Scale Defense:** Advanced corrosion inhibitors protect your cooling system from damage.
- • **Leak-Proof Confidence:** Permanently seals radiator leaks to keep your engine cool and worry-free.
- • **Universal Compatibility:** Works seamlessly with all radiator types and antifreeze formulas.

## Overview

STP GST96300EN06 Radiator Sealer is a 300ml treatment designed to permanently seal radiator leaks, compatible with all radiator types and antifreeze. It protects against rust and scale buildup while lubricating the water pump, ensuring optimal cooling system performance. Made in the UK, it’s a trusted solution for maintaining engine integrity and preventing costly repairs.

## Description

STP GST96300EN06 Radiator Sealer Permanently Seals Leaks Treatment (300 Ml) : desertcart.ae: Automotive

Review: Works well - Perfect for small leaks
Review: Highly recommended - Was told to replace the radiator. But it’s been almost a year and the leaks are all fixed

## Features

- Suitable for all types of radiator
- Compatible with all types of antifreeze
- Safe for rubber hoses
- Proudly made in the UK
- Seals radiator leaks promptly, restoring the cooling system's integrity
- Includes corrosion inhibitors to prevent rust and scale buildup
- Lubricates the water pump, ensuring smooth operation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00W1L74GY |
| Best Sellers Rank | #981 in Automotive ( See Top 100 in Automotive ) #6 in Automotive Fillers, Adhesives & Sealants |
| Brand | STP |
| Customer Reviews | 4.1 4.1 out of 5 stars (49) |
| Date First Available | 12 March 2016 |
| Item Weight | 360 g |
| Item model number | GST96300EN06 |
| Manufacturer | MOTORMEDIC |
| Manufacturer Part Number | GST96300EN06 |
| Model | Sealer |
| Product Dimensions | 7.8 x 4.3 x 14.7 cm; 360 g |

## Images

![GST96300EN06 Radiator Sealer Permanently Seals Leaks Treatment (300 Ml) - Image 1](https://m.media-amazon.com/images/I/611Ptxmj75L.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works well
*by J***D on 29 August 2025*

Perfect for small leaks

### ⭐⭐⭐⭐⭐ Highly recommended
*by A***R on 12 January 2024*

Was told to replace the radiator. But it’s been almost a year and the leaks are all fixed

### ⭐⭐⭐ Not 100% effective
*by H***A on 14 December 2023*

Leakage reduced to a smaller amount of coolant but not stopped completely

## Frequently Bought Together

- STP GST96300EN06 Radiator Sealer Permanently Seals Leaks Treatment (300 Ml)
- Turbo Radiator Coolant Green 1Gln
- STP - GST95300EN06 Radiator Flush Cleans Cooling System (300 ml)

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**Shop now:** [https://www.desertcart.fi/products/253648056-gst96300en06-radiator-sealer-permanently-seals-leaks-treatment-300-ml](https://www.desertcart.fi/products/253648056-gst96300en06-radiator-sealer-permanently-seals-leaks-treatment-300-ml)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-15*