---
product_id: 15790844
title: "GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1)"
brand: "gm genuine parts"
price: "€ 42.21"
currency: EUR
in_stock: true
reviews_count: 8
category: "Gm Genuine Parts"
url: https://www.desertcart.sk/products/15790844-gm-genuine-parts-9g-12639701-glow-plug-pack-of-1
store_origin: SK
region: Slovakia
---

# Optimized electrical flow Range of 21-40 mm reach Self-regulating heat control GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1)

**Brand:** gm genuine parts
**Price:** € 42.21
**Availability:** ✅ In Stock

## Summary

> 🔥 Ignite your diesel’s power with GM Genuine Glow Plugs – start strong, every time!

## Quick Answers

- **What is this?** GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1) by gm genuine parts
- **How much does it cost?** € 42.21 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/15790844-gm-genuine-parts-9g-12639701-glow-plug-pack-of-1)

## 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

- • **Versatile Fit Range:** Available in multiple reach lengths (21-40 mm) to perfectly match diverse combustion chamber requirements across truck models.
- • **OEM-Backed Reliability:** Genuine GM parts tested to rigorous standards, guaranteeing perfect fit, form, and function for your vehicle’s peak performance.
- • **Long-Lasting Durability:** Crafted with premium copper core and metal top materials, backed by a 24-month unlimited mile warranty for worry-free driving.
- • **Adaptive Heat Regulation:** Self-regulating coil prevents overheating by controlling electrical flow as temperatures rise, protecting your engine’s longevity.
- • **Precision Cold-Start Ignition:** Engineered to deliver rapid, reliable heat for diesel engines, ensuring smooth starts even in freezing conditions.

## Overview

GM Genuine Parts 9G Glow Plug (12639701) is a premium diesel engine component designed to provide reliable cold starts through a self-regulating heating coil. With a versatile reach range of 21 to 40 mm, it fits a wide variety of truck combustion chambers. Manufactured by ACDelco and backed by General Motors, this glow plug ensures OEM-level quality, durability, and optimized electrical flow, supported by a 24-month unlimited mile warranty.

## Description

GM Genuine Parts Glow Plugs are designed, engineered, and tested to rigorous standards, and are backed by General Motors. ACDelco Professional Glow Plugs are specially designed to give diesel engines the heat they need for cold starts, and are a high quality replacement for many vehicles on the road today. They maintain ignition in all cylinders, optimizing throttle response. These premium aftermarket replacement glow plugs are manufactured to meet or exceed your expectations for fit, form, and function. GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Review: Good value, quailty product... - 5 years in on 4 each replacements, no failures. Box marked as made in Germany (Bosch)
Review: All good! - I've replaced two of eight so far (235k miles) with glow plugs from this seller. Ships in OEM box, identical to the ones removed. Both are working fine. Just ordered two more to have on-hand. 2015 2500HD Silverado LML Duramax. Generally easy fix if you remove the inner fender well. Most are very easy access but #8 was tight quarters. Not bad with a 3/8" swivel and/or flex driver. You'll need a 10mm deep socket for the injector, 8mm socket for the nut, and a scan tool of some sort to turn the CEL off after replacement. Don't drop that little nut. ~Hour job.

## Features

- Designed to give diesel engines the heat they need for cold starts
- GN-type regulating coil
- Self-regulating to control electrical flow from the battery as temperatures rise to avoid overheating
- Full range of reaches - from 21 mm to 40 mm - to meet chamber requirements in a wide variety of applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00496LXJ8 |
| Best Sellers Rank | #11,625 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Ignition Glow Plugs |
| Brand | GM GENUINE PARTS |
| Brand Name | GM GENUINE PARTS |
| Compatible with Vehicle Type | Truck |
| Core Material | Copper |
| Customer Reviews | 4.6 out of 5 stars 1,727 Reviews |
| Global Trade Identification Number | 00707773990704 |
| Included Components | Auto Part |
| Item Type Name | Automotive Part |
| Item Weight | 1.44 ounces |
| Manufacturer | ACDelco |
| Manufacturer Part Number | 12639701 |
| Manufacturer Warranty Description | 24 Month / Unlimited Mile Limited Warranty on parts sold on or after 04/01/18. (Parts Only) Please see ACDelco.com for more details. |
| Thread Size | 10 millimeters |
| Top Material Type | Metal |
| UPC | 707773990704 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | Truck |

## Product Details

- **Brand:** GM GENUINE PARTS
- **Core Material:** Copper
- **Thread Size:** 10 millimeters
- **Top Material Type:** Metal
- **Vehicle Service Type:** Truck

## Images

![GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/51xkwWqxTUL.jpg)

## Questions & Answers

**Q: is this the right glow plug for replacement of a 97364968 unit?**
A: These are glowplugs for a 6.6L Duramax.

**Q: What's the difference between the 61g and the 9g glow plugs? Which is better?**
A: 9G IS THE NEW NUMBER

**Q: can these plugs work in a 2005 nissan urvan jn1lg4e25z0702191?**
A: These plugs do not admit a spark like a spark plug. They are for Diesel engines only.

**Q: Will these fit 2012 lml duramax**
A: yes. I used it in a 2008 Duramax engine and it works perfectly

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good value, quailty product...
*by K***. on February 13, 2026*

5 years in on 4 each replacements, no failures. Box marked as made in Germany (Bosch)

### ⭐⭐⭐⭐⭐ All good!
*by X***F on December 30, 2024*

I've replaced two of eight so far (235k miles) with glow plugs from this seller. Ships in OEM box, identical to the ones removed. Both are working fine. Just ordered two more to have on-hand. 2015 2500HD Silverado LML Duramax. Generally easy fix if you remove the inner fender well. Most are very easy access but #8 was tight quarters. Not bad with a 3/8" swivel and/or flex driver. You'll need a 10mm deep socket for the injector, 8mm socket for the nut, and a scan tool of some sort to turn the CEL off after replacement. Don't drop that little nut. ~Hour job.

### ⭐⭐⭐⭐⭐ Replacement glow plugs.
*by J***E on January 26, 2026*

Slightly different ratings then what I pulled out. But they work.

## Frequently Bought Together

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-03-08*