---
product_id: 23225656
title: "GM Original Equipment 10-108 (12378255) Cooling System Sealing Tabs - 4 g (Pack of 5)"
brand: "acdelco"
price: "247679₫"
currency: VND
in_stock: true
reviews_count: 8
category: "Ac Delco"
url: https://www.desertcart.vn/products/23225656-gm-original-equipment-10-108-12378255-cooling-system-sealing-tabs
store_origin: VN
region: Vietnam
---

# Immediate oil/coolant fill post-application High viscosity, air-cures fast Blow-out & corrosion resistant GM Original Equipment 10-108 (12378255) Cooling System Sealing Tabs - 4 g (Pack of 5)

**Brand:** acdelco
**Price:** 247679₫
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal the deal with confidence—engine leaks don’t stand a chance!

## Quick Answers

- **What is this?** GM Original Equipment 10-108 (12378255) Cooling System Sealing Tabs - 4 g (Pack of 5) by acdelco
- **How much does it cost?** 247679₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/23225656-gm-original-equipment-10-108-12378255-cooling-system-sealing-tabs)

## Best For

- acdelco enthusiasts

## Why This Product

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

## Key Features

- • **Fast-Track Repair:** Allows immediate assembly and fluid fill, minimizing downtime
- • **Durable & Reliable:** Resists engine oils, coolants, and metal corrosion for long-lasting protection
- • **Versatile Compatibility:** Works seamlessly on oil pans, manifolds, cam covers, and more
- • **Precision Engine Sealant:** Pinpoint application for complex engine joints and seals
- • **Trusted by Pros & DIYers:** Top-rated solution with proven success on high-mileage engines

## Overview

ACDelco GM Original Equipment 10-108 Cooling System Sealing Tabs deliver a high-viscosity, one-component RTV sealant engineered for quick, precise application on multiple engine components. This air-curing formula resists oils, coolants, and corrosion while allowing immediate fluid fill after installation. Trusted by mechanics and DIY enthusiasts alike, it effectively seals leaks even in high-mileage vehicles, ensuring durable, blow-out resistant protection.

## Description

RTV Engine Sealant is a one-component, room-temperature vulcanizing (RTV) sealant. It is a high viscosity engine sealant that cures when exposed to air. The cured material has adhesion and elongation properties and is effective even on large gaps. It is very resistant to engine oils and coolants, will not corrode metals, and is blow-out resistant. This engine sealant is also oxygen sensor safe. This product comes in a tube for easy, pinpoint application.

Review: Great product. Highly recommend - I have a 2013 Prius, 3rd generation . 210,000 miles. It had been running perfect, when it developed very rough engine noise and severe shaking from time to time when starting. Once underway the car ran normal. A couple of well reviewed mechanics were unable to figure out the cause of the problem. One even said the engine had something lose inside and wasn't worth fixing and should be sold for junk. That made no sense to me. Said he would give me $500 for the car as a trade on one of the used cars he had for sale. The other mechanic said he was certain the head gasket was not leaking (I suspected it was the problem until I got that advice) The check engine light came on and the code said the problem was with the #2 cylinder. I decided to use the internet to find an answer. Turns out this generation of Prius often suffers from the head gasket leaking a bit of water often into the number 2 cylinder. It's a somewhat common problem at around 200,000 miles. Number of options. 1, replace engine with a new or rebuilt or use a low mileage engine from Japan. 2. replace the head gasket. Costly options on an older car with lots of miles. fortunately, I came across a retired mechanic who was aware of the problem and suggested as a first and least costly option, I buy and use this AC Delco product to try and stop the leak. Said he used it on his own car with good luck. Said he was into the second year after using it once and no leaks. I bought it and put into the engine per the instructions. It has now been over 1000 miles since I used the product, only one application, and NO PROBLEMS!!! Talk about a cheap and effective fix. Plus it pin points the cause of the problem. So much for considering top mechanics as the last and best word on my problem. Two lessons learned. 1. This a great product so far. If problem shows up again I will just repeat the fix and take from there. Could not ask for more. 2. The internet is wonderful tool to use to help solve a problem, if only you will take the time and effort to use it fully.
Review: seals tiny leaks - Works Great

## Features

- Engineered for use on a variety of engine components - effective on: oil pan, ladder frame, front and rear covers, t-joints, manifold corners, intake, manifold end seals, and cam covers
- Designed for quick and easy application, assembly may be filled with oil or coolant immediately after applying sealant and torqueing the bolts
- High viscosity product that cures when exposed to air

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0026JK8C8 |
| Auto Part Position | Front |
| Best Sellers Rank | #5,807 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Engine Cooler Accessories |
| Brand | ACDelco |
| Brand Name | ACDelco |
| Color | Beige |
| Customer Reviews | 4.6 out of 5 stars 1,201 Reviews |
| Item Type Name | AC Delco |
| Item Weight | 1.12 ounces |
| Manufacturer | ACDelco |
| Material | Aluminum |
| Material Type | Aluminum |
| Model | 10-108 |
| UPC | 036666919363 |
| Warranty Description | No Warranty |

## Product Details

- **Auto Part Position:** Front
- **Brand:** ACDelco
- **Color:** Beige
- **Material:** Aluminum
- **UPC:** 036666919363

## Images

![GM Original Equipment 10-108 (12378255) Cooling System Sealing Tabs - 4 g (Pack of 5) - Image 1](https://m.media-amazon.com/images/I/71raVEVK6dL.jpg)

## Questions & Answers

**Q: The description states "ACDelco 10-108 COOL SEAL5TABS 24CTN"  Please clarify if this is a CARTON of 24 blister packs or only 1 blister pack w/ 5 tabs**
A: 1 blister pack with 5 tabs

**Q: Will these work with the orange Dexcool antifreeze?**
A: My mechanic said not to put anything into the anti-freeze. I will never use that orange stuff in my 1994 Cadillac 4.9 Deville. If you have the 4.6 North Star, that may be different story. GM tried to promote these tablets to cure a bad leaky North-Star motor. Jeff.

**Q: Is this product preventative ?**
A: Yes, this was actually put into aluminum block engines from the factory because of the  porosity. It does an incredible job stopping leaks and preventing leaks.

**Q: what is a ladder frame?**
A: A ladder frame uses an additional block structure located between the cylinder block and oil pan, which incorporates the main bearing caps into a one piece component resembling a ladder, sometimes called a girdle.Feb 6, 2018

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product. Highly recommend
*by R***R on August 3, 2025*

I have a 2013 Prius, 3rd generation . 210,000 miles. It had been running perfect, when it developed very rough engine noise and severe shaking from time to time when starting. Once underway the car ran normal. A couple of well reviewed mechanics were unable to figure out the cause of the problem. One even said the engine had something lose inside and wasn't worth fixing and should be sold for junk. That made no sense to me. Said he would give me $500 for the car as a trade on one of the used cars he had for sale. The other mechanic said he was certain the head gasket was not leaking (I suspected it was the problem until I got that advice) The check engine light came on and the code said the problem was with the #2 cylinder. I decided to use the internet to find an answer. Turns out this generation of Prius often suffers from the head gasket leaking a bit of water often into the number 2 cylinder. It's a somewhat common problem at around 200,000 miles. Number of options. 1, replace engine with a new or rebuilt or use a low mileage engine from Japan. 2. replace the head gasket. Costly options on an older car with lots of miles. fortunately, I came across a retired mechanic who was aware of the problem and suggested as a first and least costly option, I buy and use this AC Delco product to try and stop the leak. Said he used it on his own car with good luck. Said he was into the second year after using it once and no leaks. I bought it and put into the engine per the instructions. It has now been over 1000 miles since I used the product, only one application, and NO PROBLEMS!!! Talk about a cheap and effective fix. Plus it pin points the cause of the problem. So much for considering top mechanics as the last and best word on my problem. Two lessons learned. 1. This a great product so far. If problem shows up again I will just repeat the fix and take from there. Could not ask for more. 2. The internet is wonderful tool to use to help solve a problem, if only you will take the time and effort to use it fully.

### ⭐⭐⭐⭐⭐ seals tiny leaks
*by R***T on January 28, 2026*

Works Great

### ⭐⭐⭐⭐⭐ Fixed small radiator leak
*by A***E on December 30, 2025*

2014 Sierra - I had a very small radiator leak that I could smell but it did not drip enough to get to the ground. This fixed it, no longer smell it and quit losing antifreeze.

## Frequently Bought Together

- ACDelco GM Original Equipment 10-108 (12378255) Cooling System Sealing Tabs - 4 g
- Bar's Leaks 1109 Liquid Copper Block Seal, Intake and Radiator Stop Leak, 18 oz. | One Step, Safe for All Cooling Systems
- PEAK 50/50 Prediluted Antifreeze and Coolant for All Engine Cooling Systems

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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-02-25*