Description
Product Overview
The GM Genuine Parts Ignition Glow Plug 68G is a machined, GN‑type regulating coil designed specifically for diesel engines. Weighing just 1.44 ounces and measuring 6.03 x 0.84 x 0.78 inches, this OEM‑grade component delivers the precise heat needed for reliable cold starts. Its self‑regulating design adjusts electrical flow as temperature rises, preventing overheating while ensuring consistent performance across a full range of applications from 21 mm to 40 mm chamber sizes.
![[Product front view showing all components]](https://www.heavenbuy.store/wp-content/uploads/2026/06/3d91a5395ad64cd3bcda5218590c012b.jpg)
Usage
Ideal for Chevrolet, Buick, GMC, and Cadillac diesel models, this glow plug excels in cold climates, heavy‑duty towing, and daily commuting. Whether you’re starting the engine on a frosty morning or after a long idle period, the 68G provides rapid, controlled heat to ignite fuel efficiently. It is suited for both OEM replacements and aftermarket upgrades, delivering the same reliability as the original equipment.
Why Choose Us
GM Genuine Parts are engineered to General Motors’ rigorous standards, guaranteeing fit, function, and durability. Each plug undergoes extensive testing and is backed by GM’s warranty, giving you confidence in long‑term reliability. Our continuous updates incorporate the latest materials and technologies, ensuring you receive a part that meets modern performance expectations.
Key Features
- Self‑regulating coil prevents overheating for extended engine life
- Provides rapid heat for dependable cold‑start performance
- Machined exterior ensures precise fit and durability
- Compatible with a wide range of GM diesel models and chamber sizes
- Backed by GM engineering support and warranty service
FAQ
What vehicles are compatible with the 68G glow plug?
The 68G fits most GM diesel models, including Chevrolet Silverado, GMC Sierra, and Cadillac heavy‑duty trucks that use the original equipment specifications.
How does the self‑regulating coil work?
As the plug heats up, the coil automatically reduces electrical flow, maintaining optimal temperature and preventing damage from excessive heat.
Can I install this plug myself?
Yes, the plug is designed for standard replacement procedures. However, we recommend following GM service guidelines or consulting a professional technician.
Is there a warranty on this product?
All GM Genuine Parts come with a manufacturer warranty that covers defects in material and workmanship.
What is the difference between this and an ACDelco part?
Many GM Genuine Parts were previously branded as ACDelco OE; they are identical in design and quality, now marketed under the GM Genuine Parts name.
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