---
product_id: 47966279
title: "Holts LOYRW2R Radweld Cooling System Stop Leak & Radiator Repair 250ml"
brand: "holts"
price: "¥2994"
currency: JPY
in_stock: true
category: "Holts"
url: https://www.desertcart.jp/products/47966279-holts-loyrw2r-radweld-cooling-system-stop-leak-and-radiator-repair
store_origin: JP
region: Japan
---

# Long-lasting cooling system protection Stops radiator leaks fast 250ml precision formula Holts LOYRW2R Radweld Cooling System Stop Leak & Radiator Repair 250ml

**Brand:** holts
**Price:** ¥2994
**Availability:** ✅ In Stock

## Summary

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

## Quick Answers

- **What is this?** Holts LOYRW2R Radweld Cooling System Stop Leak & Radiator Repair 250ml by holts
- **How much does it cost?** ¥2994 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/47966279-holts-loyrw2r-radweld-cooling-system-stop-leak-and-radiator-repair)

## Best For

- holts enthusiasts

## Why This Product

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

## Key Features

- • **Rapid Leak Sealing:** Instantly seals radiator cracks and leaks to keep your engine cool and running smoothly.
- • **Compact 250ml Bottle:** Easy-to-use, perfectly sized for quick DIY repairs without the mess or hassle.
- • **Engineered for Longevity:** Formulated to provide durable protection, reducing costly repairs and downtime.
- • **Trusted Automotive Brand:** Holts, a name with over a decade of proven reliability and 4.5-star customer satisfaction.
- • **Essential for Every Car Owner:** Join thousands of savvy drivers who never hit the road without this cooling system lifesaver.

## Overview

Holts LOYRW2R Radweld Cooling System Stop Leak & Radiator Repair is a 250ml automotive additive designed to quickly and effectively seal radiator leaks, ensuring optimal engine cooling. Trusted by over 1,400 users with a 4.5-star rating, this compact formula offers long-lasting protection and easy DIY application, making it an essential tool for proactive vehicle maintenance.

## Description

Holts LOYRW2R Radweld Cooling System Stop Leak & Radiator Repair 250ml : desertcart.co.uk: DIY & Tools

## Features

- May cause damage to organs through prolonged or repeated exposure.
- Suspected of damaging fertility or the unborn child.
- Stops leaks in radiators and hoses
- Seals in minutes with no clogging or damaging effects
- Prevents future leaks
- Simply pour for a repair in minutes
- Holts
- Holts Radweld 250ml
- Seals

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000X2CR74 |
| Best Sellers Rank | 4,038 in Automotive ( See Top 100 in Automotive ) 64 in Fillers, Adhesives & Sealants |
| Brand | Holts |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,467) |
| Date First Available | 5 Oct. 2007 |
| Guaranteed software updates until | unknown |
| Item Weight | 259 g |
| Item model number | LOYRW2R |
| Manufacturer | HOLTS |
| Manufacturer part number | RW2R |
| Model | LOYRW2R |
| Product Dimensions | 14 x 7 x 4 cm; 258.55 g |

## Images

![Holts LOYRW2R Radweld Cooling System Stop Leak & Radiator Repair 250ml - Image 1](https://m.media-amazon.com/images/I/81tq-HtaWXL.jpg)

## Available Options

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

## Questions & Answers

**Q: What colour liquid is this please ? Will it change the coolant colour. thx**
A: The colour of it is a rusty red and yes it will change the colour of your coolant and really should only be used if you have a leak

**Q: Would this stop coolant leak on my lexus rx400h?**
A: If it's a minor leak on a radiator this is worth a try. Worked for me.

**Q: Will it be safe to mix it with comma xsg1l 1l xstream g48 coolant and antifreeze?**
A: As far as I know it's OK with any coolant. I checked the website and it states it's ok.  I have used it in Audi  Vw  and Renault with no problems.

**Q: I have a Citroen c4 with coolant leak into passenger footwell. How do I use this please?**
A: If the leak is coming from the coolant system, tank ,reservoir or pipes pour this liquid into the filling / top up tank making sure it`s not overfull afterwards, sometimes it takes two bottles ,doing what it says on the tin and hopefully it should do the trick.

## Frequently Bought Together

- Holts Radweld 250ml
- Permatex 80335 Muffler and Tailpipe Sealer, 3 oz., Plastic, 1 Count (Pack of 1)
- J-B Weld ExhaustWeld 2" x 72" Repair Wrap, White

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**Shop now:** [https://www.desertcart.jp/products/47966279-holts-loyrw2r-radweld-cooling-system-stop-leak-and-radiator-repair](https://www.desertcart.jp/products/47966279-holts-loyrw2r-radweld-cooling-system-stop-leak-and-radiator-repair)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-10-24*