
- Direct Replacement: Specifically engineered as a Grade C head gasket, it's the precise fit for your 2017-2021 GM 6.6L Duramax L5P, ensuring seamless installation and optimal performance.
- Genuine GM Quality: This isn't just any aftermarket part. It's a true OE component, meaning it was designed, engineered, and rigorously tested by General Motors themselves. You're getting the same quality and precision that went into your vehicle when it was new.
- Backed by General Motors: Enjoy peace of mind knowing your repair is supported by the manufacturer. This genuine GM part comes with the assurance and reliability you expect from General Motors.
- Continuously Improved: GM is committed to excellence. They regularly update their production and service part designs, incorporating the latest materials and technologies, so you're always getting a component that meets the most current standards.
- Sold Individually: Purchase exactly what you need for your repair.

A failed head gasket can lead to a cascade of engine problems, from coolant leaks and overheating to reduced performance and even catastrophic engine damage. Don't let a compromised seal sideline your 2017-2021 GM 6.6L Duramax L5P. The GM 12727486 Head Gasket (Grade C) is your essential solution, designed to restore the integrity of your engine and get you back on the road with confidence. Remember, head gaskets are a one-time use component; whenever the cylinder head is removed from the engine block, a new gasket is absolutely crucial for a proper seal and to prevent future issues.
Direct Replacement: Specifically engineered as a Grade C head gasket, it's the precise fit for your 2017-2021 GM 6.6L Duramax L5P, ensuring seamless installation and optimal performance.
Genuine GM Quality: This isn't just any aftermarket part. It's a true OE component, meaning it was designed, engineered, and rigorously tested by General Motors themselves. You're getting the same quality and precision that went into your vehicle when it was new.
Backed by General Motors: Enjoy peace of mind knowing your repair is supported by the manufacturer. This genuine GM part comes with the assura[...]
- Direct Replacement: Specifically engineered as a Grade C head gasket, it's the precise fit for your 2017-2021 GM 6.6L Duramax L5P, ensuring seamless installation and optimal performance.
- Genuine GM Quality: This isn't just any aftermarket part. It's a true OE component, meaning it was designed, engineered, and rigorously tested by General Motors themselves. You're getting the same quality and precision that went into your vehicle when it was new.
- Backed by General Motors: Enjoy peace of mind knowing your repair is supported by the manufacturer. This genuine GM part comes with the assurance and reliability you expect from General Motors.
- Continuously Improved: GM is committed to excellence. They regularly update their production and service part designs, incorporating the latest materials and technologies, so you're always getting a component that meets the most current standards.
- Sold Individually: Purchase exactly what you need for your repair.