Description
Product Overview
The GM Genuine Parts engine piston is engineered to meet General Motors’ exacting standards for original equipment. Crafted from high‑strength cast aluminum, the piston features a precision‑machined exterior that promotes optimal ring seal and heat dissipation. With dimensions of 4.75 x 4.25 x 4.25 inches and a weight of 1.23 lb, it matches the specifications of the OEM part number 19207287, ensuring a seamless fit in Chevrolet, Buick, GMC, and Cadillac engines.
Usage
Designed for both professional mechanics and DIY enthusiasts, this piston is ideal for engine rebuilds, overhauls, and performance upgrades. It performs reliably in everyday driving conditions as well as under higher stress scenarios such as towing or spirited driving. 
Why Choose Us
GM Genuine Parts are backed by General Motors’ rigorous testing and validation processes, guaranteeing compatibility and durability. Each piston undergoes strict quality control, including dimensional checks and material analysis, to ensure it meets or exceeds OEM performance. Choosing this part means benefiting from GM’s engineering expertise and a commitment to long‑term reliability.
Key Features
- Precision‑machined exterior for superior ring seal
- High‑strength cast aluminum construction for durability
- Exact OEM dimensions and weight for perfect fit
- Engineered for Chevrolet, Buick, GMC, and Cadillac models
- Backed by GM’s rigorous testing and quality assurance
FAQ
Is this piston compatible with all GM vehicles?
The piston is designed for Chevrolet, Buick, GMC, and Cadillac engines that use the original equipment part number 19207287. Verify your vehicle’s service manual for exact compatibility.
What material is the piston made from?
It is made from high‑strength cast aluminum, offering a balance of light weight and heat resistance suitable for modern engines.
Do I need special tools to install this piston?
Standard engine rebuilding tools such as a piston ring compressor, torque wrench, and proper cleaning equipment are recommended for installation.
Can this piston be used for performance upgrades?
Yes, its precision machining and robust construction make it suitable for both stock rebuilds and mild performance enhancements.
What warranty does GM provide?
GM Genuine Parts typically include a limited warranty covering manufacturing defects. Refer to the warranty card included with the product for details.






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