---
product_id: 257815528
title: "Bar's Leaks CONCENTRTD REAR MAIN SEAL"
brand: "bar's leaks"
price: "฿2442"
currency: THB
in_stock: true
category: "Bar's Leaks"
url: https://www.desertcart.co.th/products/257815528-bars-leaks-concentrtd-rear-main-seal
store_origin: TH
region: Thailand
---

# Stops leaks within 100 miles/2 days Seals multiple engine oil leaks Made in USA, trusted 70-year legacy Bar's Leaks CONCENTRTD REAR MAIN SEAL

**Brand:** bar's leaks
**Price:** ฿2442
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fix leaks like a pro—because your engine deserves the best!

## Quick Answers

- **What is this?** Bar's Leaks CONCENTRTD REAR MAIN SEAL by bar's leaks
- **How much does it cost?** ฿2442 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/257815528-bars-leaks-concentrtd-rear-main-seal)

## Best For

- bar's leaks enthusiasts

## Why This Product

- Trusted bar's leaks brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Rapid Relief:** Most leaks stop within 100 miles or 2 days—get back on the road faster
- • **Easy Application:** Simply add to crankcase oil at oil change—no mechanic needed
- • **Trusted Heritage:** 70 years of expertise and made in the USA for reliable performance
- • **Multi-Leak Master:** Seals rear main, timing cover, cam seals & more with one powerful formula
- • **Seal Restoration Tech:** Restores seal elasticity lost to heat and age, extending engine life

## Overview

Bar's Leaks Concentrated Rear Main Seal is a high-performance engine oil additive designed to restore seal flexibility and build a protective polymer film that stops rear main and other hard-to-fix oil leaks. Trusted for over 70 years and made in the USA, it works quickly—most leaks stop within 100 miles or 2 days—offering an affordable, mechanic-free solution to keep your engine running smoothly.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00754T6TK |
| Best Sellers Rank | #17,908 in Automotive ( See Top 100 in Automotive ) #125 in Oil & Fluid Additives |
| Brand | Bar's Leaks |
| Brand Name | Bar's Leaks |
| Container Type | Bottle |
| Customer Reviews | 4.2 out of 5 stars 2,807 Reviews |
| Global Trade Identification Number | 00046087010402 |
| Included Components | One bottle Bar's Leaks Rear Main Seal Repair |
| Item Form | Liquid |
| Item Type Name | Bar's Leaks Rear Main Seal Repair |
| Item Weight | 1.1 Pounds |
| Item weight | 1.1 Pounds |
| Liquid Volume | 16.9 Fluid Ounces |
| Liquid volume | 16.9 Fluid Ounces |
| Manufacturer | Bar's Leaks |
| Material | Chemical |
| Model Number | 1040 |
| Number of Items | 1 |
| Package information | Bottle |
| Part Number | 1040 |
| Recommended Uses For Product | Automotive |
| Recommended uses for product | Automotive |
| Specific Uses For Product | Sealing engine oil leaks |
| UPC | 046087010402 |
| Unit Count | 16.9 Milliliters |

## Product Details

- **Brand:** Bar's Leaks
- **Item weight:** 1.1 Pounds
- **Liquid volume:** 16.9 Fluid Ounces
- **Material:** Chemical
- **Package information:** Bottle

## Images

![Bar's Leaks CONCENTRTD REAR MAIN SEAL - Image 1](https://m.media-amazon.com/images/I/71BWlf2ZPcL.jpg)

## Questions & Answers

**Q: Is this safe for diesels, specifically the Duramax 6.6L?**
A: Yes..... According to Bars Product, this is compatible with all engines and engine oils.

**Q: Can you use this with synthetic oils**
A: Yes, I have used it with synthetic oil with no issues.

**Q: What it does with my other gasket that has not have a leak?**
A: If I'm understanding your question correctly.... you would like to know what effect this has on gaskets that are not leaking?    The answer is nothing.....  Thank you  Eric

**Q: Is this safe to use with other gas additives such as seafoam, lucas?**
A: Yes there is no problem. This gets poured into your oil crankcase not into your gasoline. Seafoam usually gets poured into your gas tank to clean injectors and cylinder walls sometimes you can put it in the crankcase just about 4 oz to clean junk this does not stop any leaks usually done 100 or 200 mi before an oil change. Lucas has many products some that are injector cleaners that go into the fuel tank some that are oil stabilizers or stop leaks or friction additives that go into your oil crankcase you can have Lucas oil additive/stop leak and bars leak in your oil crankcase they don't interfere with one another

## Frequently Bought Together

- Bar's Leaks Rear Main Seal Repair, 16.9 oz
- Bar's Leaks OS-1 Oil Seal Engine Oil Burning and Leak Repair, 16.9 oz.
- Bar's Leaks 1420 Transmission Stop Leak - 11 oz. , Grey

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**Shop now:** [https://www.desertcart.co.th/products/257815528-bars-leaks-concentrtd-rear-main-seal](https://www.desertcart.co.th/products/257815528-bars-leaks-concentrtd-rear-main-seal)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-07-14*