---
product_id: 322638893
title: "Genuine GM 12639250 Crankshaft Oil Seal Housing, Rear"
brand: "gm genuine parts"
price: "$312"
currency: NZD
in_stock: true
reviews_count: 5
category: "Gm Genuine Parts"
url: https://www.desertcart.nz/products/322638893-genuine-gm-12639250-crankshaft-oil-seal-housing-rear
store_origin: NZ
region: New Zealand
---

# Exact OEM dimensions 32.26x30.99x8.13 cm Precision-machined for perfect fit Durable 1.05 kg robust construction Genuine GM 12639250 Crankshaft Oil Seal Housing, Rear

**Brand:** gm genuine parts
**Price:** $312
**Availability:** ✅ In Stock

## Summary

> ⚙️ Seal your engine’s success with GM precision!

## Quick Answers

- **What is this?** Genuine GM 12639250 Crankshaft Oil Seal Housing, Rear by gm genuine parts
- **How much does it cost?** $312 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/322638893-genuine-gm-12639250-crankshaft-oil-seal-housing-rear)

## 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

- • **Durable Build:** Heavy-duty machined housing built to withstand high engine stress
- • **Perfect OEM Fit:** Designed to match GM’s original specs for seamless installation
- • **Optimized Dimensions:** Compact yet robust size fits precisely without compromise
- • **Trusted Brand Assurance:** GM Genuine Parts backing for peace of mind and long-term performance
- • **Engineered for Reliability:** Genuine GM part ensures flawless oil sealing and engine protection

## Overview

The Genuine GM 12639250 Crankshaft Oil Seal Housing (Rear) is a precision-machined, OEM-spec auto part weighing 1.05 kg, designed to provide a durable and exact fit for optimal engine oil sealing and protection. Manufactured by GM Genuine Parts, it guarantees reliability and long-lasting performance for your vehicle’s engine.

## Description

GM Housing - 12639250

Review: Genuine product..perfect fit - Only way to go ...buy Genuine
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.

## Features

- Product Type: Auto Part
- Package Quantity: 1
- Made In China
- Package Dimensions: 31.496Cm (L) X 30.988Cm (W) X 8.128Cm (H)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | GM Genuine Parts |
| Brand | GM GENUINE PARTS |
| Model | GM Original Equipment |
| Product Dimensions | 32.26 x 30.99 x 8.13 cm; 1.05 kg |
| Item model number | 12639250 |
| Exterior | Machined |
| Manufacturer Part Number | 12639250 |
| OEM Part Number | 12639250 |
| Item Weight | 1.05 Kilograms |

## Images

![Genuine GM 12639250 Crankshaft Oil Seal Housing, Rear - 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

### ⭐⭐⭐⭐⭐ Genuine product..perfect fit
*by C***Y on 13 May 2025*

Only way to go ...buy Genuine

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

### ⭐⭐⭐⭐⭐ Justo a tiempo y un excelente producto 👍
*by L***. on 28 February 2021*

Excelente si arreglamos el problema de mi motor gracias 🙋🏻‍♂️

## Frequently Bought Together

- GM Genuine Parts 12639250 LS Rear Block Cover
- OywhC LS Billet Rear Galley Plug Barbell Oil Diverter fits for GM Gen III & IV LS1 LS3 LS2 LQ4 LQ9 LS6 L92 L33 L99 Oil Diverter LS Barbell 6061-T6 Aluminum Alloy Material
- Camshaft Retainer Plate Gasket Compatible with LS Series Engines, &Bolt Kit ARP 134-1003 Gen III IV V for GM LS1 LS2 LS3 4.8 5.3L 6.0L 6.2L Vortec Corvette Cam

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.nz/products/322638893-genuine-gm-12639250-crankshaft-oil-seal-housing-rear](https://www.desertcart.nz/products/322638893-genuine-gm-12639250-crankshaft-oil-seal-housing-rear)

---

*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-01-27*