



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







| 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 |
K**.
Good value, quailty product...
5 years in on 4 each replacements, no failures. Box marked as made in Germany (Bosch)
X**F
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.
J**E
Replacement glow plugs.
Slightly different ratings then what I pulled out. But they work.
M**.
Perfect fit (2016 Duramax)
Perfect fit because they are OEM. Saved a ton of money by installing myself. Watched a lot of YouTube horror stories on the process, but in the end it wasn’t bad. Took my time, applied gentle pressure, and the original glow plugs came out easily.
K**N
Worked perfect
Ordered for hubby Just what he needed
B**N
Made in India?
Package looks OEM (ACDelco) and states made in Germany, part stamped wth made in "India". Hopefully will last as long as OEM. One star off for made in different country than advertised.
N**.
Exact replacement and good value
Easy install and exact replacement. I recommend this item and seller.
D**N
Genuine GM Part
Genuine OEM GM part for a good price.
Trustpilot
1 week ago
1 month ago