---
product_id: 49554896
title: "Holts Sealit Leak Repair 250ml, (Packing May Vary)"
brand: "holts"
price: "301 kr"
currency: DKK
in_stock: false
reviews_count: 13
category: "Holts"
url: https://www.desertcart.dk/products/49554896-holts-sealit-leak-repair-250ml-packing-may-vary
store_origin: DK
region: Denmark
---

# Universal antifreeze compatibility Fast-acting sealant Permanent leak repair Holts Sealit Leak Repair 250ml, (Packing May Vary)

**Brand:** holts
**Price:** 301 kr
**Availability:** ❌ Out of Stock

## Summary

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

## Quick Answers

- **What is this?** Holts Sealit Leak Repair 250ml, (Packing May Vary) by holts
- **How much does it cost?** 301 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/49554896-holts-sealit-leak-repair-250ml-packing-may-vary)

## 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

- • **Budget-Smart Solution:** Avoid costly repairs with an affordable, effective fix
- • **Long-Lasting Durability:** Keeps your coolant system sealed for thousands of miles
- • **Instant Coolant Leak Fix:** Pour-and-go formula saves your engine time and stress
- • **Professional-Grade Reliability:** Trusted by mechanics, loved by drivers
- • **Works with All Antifreeze Types:** Seamless compatibility for every vehicle

## Overview

Holts Sealit Leak Repair is a professional-grade, easy-to-use coolant leak sealant compatible with all antifreeze types. Designed for a permanent fix, it quickly stops leaks and prevents coolant loss, extending engine life and saving costly repairs. Trusted by thousands of users, it delivers long-lasting performance for older and newer vehicles alike.

## Description

Quickly seal coolant leaks with this professional-grade, pour-and-go repair. Works on all antifreeze types. Easy, effective solution for a permanent fix.

Review: Yep - just works! - *UPDATE* This has gone for thousands of miles and still no need to top up water or oil. Completely fixed. Very happy. The car is 19 years old - getting the head for less than a tenner before it was almost a grand has been amazing. Cannot recommend this more. Was going to buy another today (another car) but there's a minimum order of five right now, and I don't need that many... Unfortunate but I'll go to my local motor factors instead. I tried Wynne's coolant system seal and it didn't do the job - it's supposed to be as good as RadWeld Plus. I didn't want to bother with RadWeld Plus as my coolant went down disturbingly quickly. I've had a head gasket problems in Astras before, and I was worried it was that. No obvious leaks anywhere, and only going down when it's running. This has been in for a good few hundred miles and a couple of weeks and it's not gone down one bit! Literally drop it in and run the engine, no special timing or anything... Very impressed, and a great price.
Review: Worked well for me - Head gasket on the way out in my old school VW t25 so used this and worked perfectly fine for me. The exhaust gas stopped leaking into the coolant which was exploding everywhere when warm. Worked well enough for a 300 mile drive for the new engine to be installed so very pleased

## Features

- Suspected of damaging fertility or the unborn child.
- car parts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00EJOI4P6 |
| Best Sellers Rank | 16,023 in Automotive ( See Top 100 in Automotive ) 166 in Fillers, Adhesives & Sealants |
| Brand | Holts |
| Customer Reviews | 4.2 4.2 out of 5 stars (807) |
| Date First Available | 14 Aug. 2013 |
| Item Weight | 290 g |
| Item model number | LOYHREP0101A |
| Manufacturer | HOLTS |
| Manufacturer part number | LOYHREP0101A |
| Model | LOYHREP0101A |
| Package Dimensions | 14.5 x 7.5 x 3.6 cm; 290 g |
| Position | Rear Left Upper |

## Images

![Holts Sealit Leak Repair 250ml, (Packing May Vary) - Image 1](https://m.media-amazon.com/images/I/71ewAny3rFL.jpg)
![Holts Sealit Leak Repair 250ml, (Packing May Vary) - Image 2](https://m.media-amazon.com/images/I/81Kobo3QLPL.jpg)

## Questions & Answers

**Q: What is the difference between this and Holt's Radweld?**
A: According to Holts, SEALIT is stronger then Radweld.

**Q: Will this help if water pump seal has slight leak?**
A: doubtful, but worth a try. Will seal a leaking water pump gasket, but a seal with a rotating shaft is unlikely..but at the price of Sealit, worth a try. Changing a water pump for new can be difficult , it all depends on access. If you do put a new one in, refill the system with coolant very slowly so there are no air locks and use any bleed scres there may be. If you get a lot of air locks , the new water pump seal can burn out and leak too, when you start up

**Q: If expansion tank looks empty, should i put coolant in it before using this?**
A: turn on heaters to hot open all vents to circulate water in system get there air out Put it all in and top up to max with antifreeze  winters here then take your car for a drive helps to maintain excelleration. it worked on my 5 series BMW 2014 had lost half a pint since using this have not lost a drop done over 200 miles only check when completely cold.

**Q: Oil in coolant system**
A: Yes sounds like head gasket issue use this product it will form a seal as a temporary fix for approximately 3 months .
Many thanks

## Customer Reviews

### ⭐⭐⭐⭐⭐ Yep - just works!
*by M***N on 5 May 2020*

*UPDATE* This has gone for thousands of miles and still no need to top up water or oil. Completely fixed. Very happy. The car is 19 years old - getting the head for less than a tenner before it was almost a grand has been amazing. Cannot recommend this more. Was going to buy another today (another car) but there's a minimum order of five right now, and I don't need that many... Unfortunate but I'll go to my local motor factors instead. I tried Wynne's coolant system seal and it didn't do the job - it's supposed to be as good as RadWeld Plus. I didn't want to bother with RadWeld Plus as my coolant went down disturbingly quickly. I've had a head gasket problems in Astras before, and I was worried it was that. No obvious leaks anywhere, and only going down when it's running. This has been in for a good few hundred miles and a couple of weeks and it's not gone down one bit! Literally drop it in and run the engine, no special timing or anything... Very impressed, and a great price.

### ⭐⭐⭐⭐⭐ Worked well for me
*by R***Y on 1 February 2025*

Head gasket on the way out in my old school VW t25 so used this and worked perfectly fine for me. The exhaust gas stopped leaking into the coolant which was exploding everywhere when warm. Worked well enough for a 300 mile drive for the new engine to be installed so very pleased

### ⭐⭐⭐⭐⭐ It has worked for me..
*by A***D on 1 January 2026*

I think if you use this correctly, it will work,, it's best to remove the thermostat, install this, drive around, and see if you are losing water. If not, reinsert the thermostat. I have been using the car for a week now with no problems.

## Frequently Bought Together

- Holts Sealit Leak Repair 250ml, (Packing May Vary)
- PRESTONE PAFR0035B Coolant Antifreeze for All Vehicles 10 year 300,000 miles Corrosion Protection, Ready to Use, 1 Litre

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-09*