GM Genuine Parts Engine Valve Guide 12642273 Machined Steel

Description

Product Overview

The GM Genuine Parts Engine Valve Guide 12642273 is engineered to meet the exacting standards of original equipment manufacturers. Crafted from high‑grade machined steel, this valve guide delivers a precise fit that mirrors the performance of factory‑installed components. Its dimensions of 4.3 x 3.1 x 1.6 inches and a lightweight 5.1‑ounce profile make it an ideal replacement for a wide range of GM powertrains. The exterior finish is machined for smooth installation, reducing the risk of damage during assembly. Designed for durability, the guide resists wear, heat, and corrosion, extending the service life of your engine and maintaining optimal valve timing. Whether you are restoring a classic vehicle or performing routine maintenance on a modern model, this part offers the reliability and confidence that only GM Genuine Parts can provide.

Usage

This valve guide is suitable for use in Chevrolet, Buick, GMC, and Cadillac engines that require a direct replacement for the original equipment part. It is ideal for both professional mechanics and DIY enthusiasts who demand a seamless fit and long‑term performance. Install the guide during a valve train overhaul, a cylinder head rebuild, or as part of a preventative maintenance program to avoid costly engine failures. The component performs reliably under high‑temperature conditions typical of performance driving, heavy towing, or daily commuting. Its compatibility with a variety of GM engine families ensures that it can be used in a broad spectrum of applications, from compact cars to full‑size trucks.

Why Choose Us

Choosing GM Genuine Parts means selecting a product that has been rigorously tested and validated by the same engineers who design the original equipment. Each valve guide undergoes strict quality control procedures, including material certification, dimensional inspection, and functional testing. The machined steel construction provides superior strength compared to generic aftermarket alternatives, reducing the likelihood of deformation under load. GM regularly updates its part designs to incorporate the latest material technologies, ensuring that you receive a component that reflects current engineering advancements. In addition, GM offers comprehensive after‑sales support, including technical assistance, warranty coverage, and access to a network of certified service centers. This commitment to quality and customer satisfaction sets GM Genuine Parts apart in the competitive automotive market.

Key Features

• Precision‑machined steel ensures a perfect fit and reliable performance.
• Durable construction resists wear, heat, and corrosion for extended service life.
• Designed to match OEM specifications for Chevrolet, Buick, GMC, and Cadillac engines.
• Lightweight design simplifies handling and installation during engine rebuilds.
• Backed by GM Genuine Parts warranty and dedicated customer support.

FAQ

What engines are compatible with part number 12642273?

The valve guide fits a range of GM engines, including those found in Chevrolet, Buick, GMC, and Cadillac vehicles that originally used the OEM part number 12642273.

Do I need special tools to install this valve guide?

Standard valve guide installation tools are sufficient. A torque wrench, guide installer, and proper cleaning equipment will ensure a smooth installation.

How does the machined steel compare to cast iron alternatives?

Machined steel offers higher tensile strength and better heat resistance than cast iron, resulting in improved durability and reduced risk of deformation under high‑load conditions.

Is there a warranty on this product?

Yes, GM Genuine Parts provides a limited warranty that covers manufacturing defects and offers technical support for installation questions.

Can this valve guide be used in performance or racing applications?

While the guide meets OEM specifications for street use, its robust steel construction also makes it suitable for moderate performance upgrades, provided the engine is otherwise properly tuned.