--- product_id: 15790844 title: "GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1)" brand: "gm genuine parts" price: "¥6355" currency: JPY in_stock: true reviews_count: 13 category: "Gm Genuine Parts" url: https://www.desertcart.jp/products/15790844-gm-genuine-parts-9g-12639701-glow-plug-pack-of-1 store_origin: JP region: Japan --- # Range of 21-40 mm reach Self-regulating heat control OE-grade copper core GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1) **Brand:** gm genuine parts **Price:** ¥6355 **Availability:** ✅ In Stock ## Summary > 🔥 Ignite your diesel’s power with GM Genuine Parts Glow Plugs – start smarter, drive stronger! ## Quick Answers - **What is this?** GM Genuine Parts 9G (12639701) Glow Plug (Pack of 1) by gm genuine parts - **How much does it cost?** ¥6355 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/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 engine chambers. - • **Long-Term Confidence:** 24-month unlimited mile warranty ensures durability and peace of mind on every drive. - • **OEM-Backed Reliability:** Engineered and validated by GM for guaranteed fit, form, and function on your truck. - • **Smart Thermal Regulation:** Self-regulating coil prevents overheating by controlling electrical flow dynamically. - • **Precision Cold-Start Ignition:** Delivers optimal heat for instant diesel engine starts, even in freezing temps. ## Overview GM Genuine Parts 9G Glow Plug (12639701) is a premium, copper-core diesel engine glow plug designed for cold starts. Featuring a self-regulating coil to prevent overheating and available in multiple reach sizes (21-40 mm), it ensures precise fit and optimal ignition performance. Backed by GM’s OE standards and a 24-month unlimited mile warranty, it’s the trusted choice for professional-grade diesel engine reliability. ## 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: fixed my problem - description was good and it was a perfect match and fit Review: Easy to install - Fast delivery works great ## 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 | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #8,894 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 1,761 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. | | Model Number | 12639701 | | Number of Items | 1 | | Number of Packs | 1 | | OEM Equivalent Part Number | 12639701 | | Thread Size | 10 millimeters | | Top Material Type | Metal | | UPC | 707773990704 | | Unit Count | 1 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 there a recommended interval for changing my vehicle’s spark plugs?** A: Yes, the interval depends on each vehicle model’s specifications. Refer to your vehicle Owner’s Manual for guidance on when you should change your vehicle’s spark plugs. **Q: Should I change all of my vehicle’s spark plugs at the same time?** A: Yes, when it is time for a scheduled spark plug replacement, all spark plugs should be changed. If a single spark plug is fouled or damaged outside of scheduled maintenance, finding the source of the damage and changing it is recommended. **Q: Can I just clean my spark plugs instead of replacing them?** A: No, ACDelco does not recommend cleaning old spark plugs. Cleaning spark plugs does not repair broken components, chipped insulator tips, and worn electrodes and wires. **Q: What is pre-ignition and can it damage my engine?** A: Yes, pre-ignition can cause serious damage to an engine. Pre-ignition, often accompanied by engine knocking sounds, air and fuel ignite in the engine before the spark plug fires. The condition commonly occurs when old spark plugs are worn or dirty. **Q: Does a diesel engine require a different type of plug than a gas engine?** A: Yes, diesel engines require glow plugs instead of spark plugs. To learn what type of glow plugs or spark plugs your vehicle requires, refer to your vehicle Owner’s Manual for guidance. ## Customer Reviews ### ⭐⭐⭐⭐⭐ fixed my problem *by J***Y on September 28, 2026* description was good and it was a perfect match and fit ### ⭐⭐⭐⭐⭐ Easy to install *by E***N on April 18, 2026* Fast delivery works great ### ⭐⭐⭐⭐⭐ 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) ## 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 --- ## 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.jp/products/15790844-gm-genuine-parts-9g-12639701-glow-plug-pack-of-1](https://www.desertcart.jp/products/15790844-gm-genuine-parts-9g-12639701-glow-plug-pack-of-1) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-28*