Description
Product Overview
The GM Genuine Parts rear axle flange gasket is engineered to match original equipment specifications for Chevrolet, Buick, GMC and Cadillac vehicles. Crafted from precision‑machined aluminum, it offers a durable, corrosion‑resistant seal that maintains axle integrity under demanding conditions. Dimensions are 12.7 x 11.2 x 0.2 inches, and the gasket weighs just 2.72 ounces, making it easy to handle and install.
![[Product front view showing all components]](https://www.richmart.store/wp-content/uploads/2026/06/fc2daebdf2404e3abcf948e95e5bdac6.jpg)
Usage
Designed for rear axle applications, this gasket fits directly onto the factory flange, providing a leak‑free connection for brake and differential fluids. It is suitable for routine maintenance, component replacement, or performance upgrades. Whether you are a professional mechanic or a DIY enthusiast, the gasket’s straightforward installation saves time and reduces the risk of errors.
Why Choose Us
GM Genuine Parts are backed by General Motors engineering standards, ensuring each gasket meets rigorous durability and fitment tests. The machined aluminum construction offers superior strength compared to stamped alternatives, and the part is covered by GM’s warranty for added peace of mind.
Key Features
- Precision‑machined aluminum provides a perfect seal and long‑term durability
- Exact OEM dimensions guarantee hassle‑free installation on GM rear axles
- Lightweight design simplifies handling and reduces installation time
- Corrosion‑resistant material protects against harsh road conditions
- Supported by GM’s warranty and dedicated customer service team
FAQ
Is this gasket compatible with all GM models?
It is designed for Chevrolet, Buick, GMC and Cadillac vehicles that use the original equipment part number 85720902.
Do I need special tools to install the gasket?
No special tools are required; the gasket fits directly onto the factory flange and can be installed with standard hand tools.
What warranty does GM provide for this part?
The gasket is covered by GM’s standard warranty, offering replacement or refund if it fails due to manufacturing defects.
Can I use this gasket for performance upgrades?
Yes, the machined aluminum construction handles higher stress levels, making it suitable for both stock and performance applications.
How does the gasket compare to aftermarket alternatives?
GM Genuine Parts are engineered to exact OEM specifications, providing a more reliable fit and longer lifespan than many generic aftermarket options.





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