GM Genuine Parts Engine Piston Machined 89060486

Description

Product Overview

The GM Genuine Parts Engine Piston is a precision‑machined, cast‑aluminum component engineered to meet General Motors original equipment standards. With a part number of 89060486, this piston weighs 1.4 pounds and measures 5 x 4.25 x 4.25 inches, providing an exact fit for a wide range of GM engines. Its exterior is machined for optimal surface finish, reducing friction and promoting efficient combustion. Designed by GM engineers, the piston incorporates the latest material technologies to ensure strength, heat resistance, and longevity in both daily driving and high‑load scenarios.

Usage

This piston is ideal for professional mechanics, DIY enthusiasts, and fleet maintenance teams who need a reliable replacement that matches OEM tolerances. It is suitable for routine engine rebuilds, performance upgrades, and emergency repairs on Chevrolet, Buick, GMC, and Cadillac models. Whether you are restoring a classic vehicle or maintaining a modern fleet, the piston’s design supports consistent power delivery and smooth engine operation.

Why Choose Us

GM Genuine Parts are backed by the rigorous testing and validation processes of General Motors. Each piston undergoes strict quality control to guarantee dimensional accuracy and material integrity. As an OEM‑approved component, it integrates seamlessly with existing engine assemblies, reducing installation time and the risk of incompatibility. Our parts are regularly updated to incorporate new alloys and manufacturing techniques, ensuring you receive the most advanced solution available on the market.

Key Features

• Exact OEM dimensions for a perfect fit in GM engines
• Machined cast‑aluminum construction for strength and heat dissipation
• Lightweight design at 1.4 lb to improve engine balance
• Engineered by GM to meet original equipment performance standards
• Backed by GM’s warranty and rigorous quality assurance processes

FAQ

Is this piston compatible with all GM models?

The piston is designed for a broad range of Chevrolet, Buick, GMC and Cadillac engines that use the 89060486 part number. Always verify your vehicle’s service manual for exact compatibility.

Do I need special tools to install the piston?

Standard engine rebuilding tools such as a piston ring compressor, torque wrench, and proper cleaning equipment are sufficient. Follow the GM service guide for torque specifications.

Can this piston be used for performance upgrades?

Yes. Its high‑quality cast‑aluminum material and precise machining make it suitable for both stock rebuilds and modest performance enhancements.

What warranty does GM provide?

GM Genuine Parts include a limited warranty that covers manufacturing defects for a specified period. Refer to the warranty card included with the product for details.

How does this piston differ from aftermarket alternatives?

Unlike many aftermarket parts, this piston is engineered and tested by GM engineers, ensuring it meets the exact specifications, material standards, and durability of the original equipment.