---
product_id: 774469576
title: "GM 12639701 ACDelco 9G Professional Glow Plug (Pack of 1)"
brand: "gm genuine parts"
price: "฿3409"
currency: THB
in_stock: true
url: https://www.desertcart.co.th/products/774469576-gm-12639701-acdelco-9g-professional-glow-plug-pack-of-1
store_origin: TH
region: Thailand
---

# Self-regulating electrical flow Versatile reach 21-40mm Rapid cold start heat GM 12639701 ACDelco 9G Professional Glow Plug (Pack of 1)

**Brand:** gm genuine parts
**Price:** ฿3409
**Availability:** ✅ In Stock

## Summary

> 🔥 Power up your diesel start game with precision and reliability!

## Quick Answers

- **What is this?** GM 12639701 ACDelco 9G Professional Glow Plug (Pack of 1) by gm genuine parts
- **How much does it cost?** ฿3409 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/774469576-gm-12639701-acdelco-9g-professional-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

- • **Fits Like a Glove:** Available in multiple reach sizes (21-40mm) to suit diverse engine chambers
- • **Smart Heat Control:** Self-regulating coil prevents overheating, protecting your engine
- • **OEM Quality Assurance:** GM Genuine Parts ensure perfect fit, form, and function for peace of mind
- • **Optimize Engine Performance:** Maintains ignition in all cylinders for smoother throttle response
- • **Ignite Your Diesel Instantly:** Delivers precise heat for flawless cold starts every time

## Overview

The GM 12639701 ACDelco 9G Professional Glow Plug is a premium diesel engine component designed to provide rapid and reliable heat for cold starts. Featuring a self-regulating GN-type coil to prevent overheating, it comes in a range of reach sizes (21-40mm) to fit various engine chambers. Manufactured as a GM Genuine Part, it guarantees OEM-level quality, ensuring optimal ignition and enhanced throttle response for professional-grade engine performance.

## Description

GM 12639701 ACDelco 9G Professional Glow Plug (Pack of 1)

## 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 â€“ from 21 mm to 40 mm â€“ to meet chamber requirements in a wide variety of applications
- Some GM Original Equipment parts may have formerly appeared as ACDelco Professional

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | ACDelco |
| Brand | GM GENUINE PARTS |
| Product Dimensions | 15.75 x 2.54 x 2.54 cm; 40.82 g |
| Item model number | 12639701 |
| Manufacturer part number | 12639701 |
| OEM Part Number | 12639701 |
| Item Weight | 40.8 g |

## Product Details

- **Brand:** GM GENUINE PARTS
- **Core material:** Copper
- **Thread size:** 10 millimeters
- **Top material type:** Metal
- **Vehicle service type:** Motorcycle

## Images

![GM 12639701 ACDelco 9G Professional 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

## Frequently Bought Together

- GM Parts GM Genuine Parts 9G Glow Plug (Pack of 1)
- GM Parts GM Genuine Parts TP3018 (19431541) Fuel Filter Kit
- ACDelco GM Original Equipment PF2232 Engine Oil Filter

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**Shop now:** [https://www.desertcart.co.th/products/774469576-gm-12639701-acdelco-9g-professional-glow-plug-pack-of-1](https://www.desertcart.co.th/products/774469576-gm-12639701-acdelco-9g-professional-glow-plug-pack-of-1)

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*Product available on Desertcart Thailand*
*Store origin: TH*
*Last updated: 2026-03-03*