---
product_id: 46949318
title: "12639250 LS Rear Block Cover"
brand: "gm genuine parts"
price: "1702 DH"
currency: MAD
in_stock: true
reviews_count: 10
category: "Gm Genuine Parts"
url: https://www.desertcart.ma/products/46949318-12639250-ls-rear-block-cover
store_origin: MA
region: Morocco
---

# Upgraded bolt kit included OE precision engineering 1-for-1 direct fit installation 12639250 LS Rear Block Cover

**Brand:** gm genuine parts
**Price:** 1702 DH
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock in reliability with GM Genuine Parts — because your ride deserves the real deal!

## Quick Answers

- **What is this?** 12639250 LS Rear Block Cover by gm genuine parts
- **How much does it cost?** 1702 DH with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ma](https://www.desertcart.ma/products/46949318-12639250-ls-rear-block-cover)

## Best For

- gm genuine parts enthusiasts

## Why This Product

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

## Key Features

- • **Future-Proof Design:** Regularly updated with new materials and tech to keep your vehicle running smoothly and leak-free.
- • **Trusted by Thousands:** Rated 4.8/5 by over 700 users who fixed leaks and restored engine integrity with confidence.
- • **Engineered by GM Experts:** Designed and validated specifically for Chevrolet, Buick, GMC, and Cadillac vehicles to ensure perfect compatibility and performance.
- • **Upgraded Hardware Included:** Comes with enhanced bolts for a more secure, durable fit—no more worrying about leaks or loose parts.
- • **Seamless 1-for-1 Replacement:** Machined exterior and exact OEM specs make installation straightforward, saving you time and hassle.

## Overview

The GM Genuine Parts 12639250 LS Rear Block Cover is a precision-engineered, OEM-quality replacement part designed for Chevrolet, Buick, GMC, and Cadillac vehicles. Featuring upgraded bolts and a machined exterior, it ensures a perfect 1-for-1 fit that stops leaks and restores engine integrity. Backed by GM’s rigorous testing and continuous design updates, this part offers durable, reliable performance trusted by thousands of satisfied customers.

## Description

Buy GM Genuine Parts 12639250 LS Rear Block Cover: Covers - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Did the job - This kit fixed my rear main seal leak on my Silverado. My stepdad ordered the same set and we fixed his Cadillac Escalade as well. The upgraded bolts are nice. Some reviews say it is not genuine OEM. I really don't know if it is or isn't. I'm not sure how you can tell but it definitely fits correctly and does the job. It is also easier to do with this kit than swapping the seal without a new housing.
Review: Great product, fits and had no issues. - I bought this for my 2007 Tahoe LT Flex Fuel 5.3L truck. I was leaking oil from underneath and figured the truck has over 170k on it so instead of just replacing the seal itself, I decided to get this done plus a bunch of other seals (oil pan gasket, pick up tube o-ring, etc). Had my buddy’s shop take care of the physical work but buying my own parts and comparing prices elsewhere, desertcart had everywhere best by a lot. If your mechanically inclined then save on labor and do it all yourself but this is intensive and for me I’m an avid DIYer but this, I had to pass it up. Good luck, hopefully this will resolve any leaks you’re having between your block and tranny. It’s updated design comes with everything you need for the 1 for 1 install. My truck has almost 1000 miles with this installed no further issues coming from the block.

## Features

- Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
- GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
- GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
- GM regularly updates production and service part designs to integrate new materials and technologies

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00F677EHE |
| Brand | GM GENUINE PARTS |
| Customer Reviews | 4.8 4.8 out of 5 stars (726) |
| Date First Available | November 21, 2013 |
| Exterior | Machined |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.32 pounds |
| Item model number | 12639250 |
| Manufacturer | GM Genuine Parts |
| Manufacturer Part Number | 12639250 |
| Model | GM Original Equipment |
| OEM Part Number | 12639250 |
| Product Dimensions | 12.7 x 12.2 x 3.2 inches |

## Images

![12639250 LS Rear Block Cover - Image 1](https://m.media-amazon.com/images/I/71K-Mq8OqIL.jpg)

## Questions & Answers

**Q: Will this fit a 2014 Camaro ZL1?**
A: This should fit any Gen 4 LS block, including the LSA, which is what the ZL1 has.

**Q: Will this fit a 2011 chevy silverado 1500 crew cab with 5.3 L engine**
A: Yes

**Q: Will this fit my 2005 Silverado 4.8 engine**
A: Yes Sir, it will fit!

**Q: When will you have these back in stock to ship out? I ordered one a week ago then the order was cancelled because of the condition of the unit you had**
A: We have these in stock at this time. April 11, 2022

## Customer Reviews

### ⭐⭐⭐⭐⭐ Did the job
*by G***Y on June 21, 2024*

This kit fixed my rear main seal leak on my Silverado. My stepdad ordered the same set and we fixed his Cadillac Escalade as well. The upgraded bolts are nice. Some reviews say it is not genuine OEM. I really don't know if it is or isn't. I'm not sure how you can tell but it definitely fits correctly and does the job. It is also easier to do with this kit than swapping the seal without a new housing.

### ⭐⭐⭐⭐⭐ Great product, fits and had no issues.
*by R***. on May 22, 2019*

I bought this for my 2007 Tahoe LT Flex Fuel 5.3L truck. I was leaking oil from underneath and figured the truck has over 170k on it so instead of just replacing the seal itself, I decided to get this done plus a bunch of other seals (oil pan gasket, pick up tube o-ring, etc). Had my buddy’s shop take care of the physical work but buying my own parts and comparing prices elsewhere, Amazon had everywhere best by a lot. If your mechanically inclined then save on labor and do it all yourself but this is intensive and for me I’m an avid DIYer but this, I had to pass it up. Good luck, hopefully this will resolve any leaks you’re having between your block and tranny. It’s updated design comes with everything you need for the 1 for 1 install. My truck has almost 1000 miles with this installed no further issues coming from the block.

### ⭐⭐⭐⭐⭐ Don't shortcut, get the whole cover kit and do the job once.
*by C***A on August 31, 2016*

Genuine GM replacement part. Fit perfectly and made repairing the rear engine cover leak a simple process. GM has several EXPENSIVE specialty tools to install the front and rear covers, and oil pan on the LS style engine. I have never used them, and have not had any problems. With the main seal preinstalled, the OE tools would not work anyway. Additionally, the rear main seal can center itself over the rear crank snout, unlike the front cover where it actually seals against the damper pulley, not the crank. The OE method, installs the rear cover without the seal, then installs the seal, so positioning of the cover prior to the seal would be critical. Bolts originally were a 10mm head, revised bolts were a 13mm head. Installation: I applied a small bead of RTV to the joint of the oil pan gasket and the rear of the block on the left and right sides. I positioned the cover with the seal protector still fitted, as the bolts are retained by the cover seal. I worked my way around and started all of the cover bolts and allowed the cover to loosely fit over the crank snout, pushing the seal protector from inside of the seal. Once the cover bolts were finger snug to the back of the engine, I installed the two long oil pan bolts and torqued them to 106 in-lbs. The cover bolts are then torqued to 18 ft lbs. Before doing that, I snugged them all with a socket then loosened the long oil pan bolts to ensure the cover was pulled into place. Then retorqued the oil pan bolts, and then the rear cover bolts in a criss cross pattern.

## Frequently Bought Together

- GM Genuine Parts 12639250 LS Rear Block Cover
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**Shop now:** [https://www.desertcart.ma/products/46949318-12639250-ls-rear-block-cover](https://www.desertcart.ma/products/46949318-12639250-ls-rear-block-cover)

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*Product available on Desertcart Morocco*
*Store origin: MA*
*Last updated: 2026-02-14*