GM Genuine Parts Rocker Arm Nut Machined Steel

Description

Product Overview

The GM Genuine Parts Rocker Arm Nut is engineered to fasten critical engine components with the same precision and durability as the original equipment. Crafted from high‑grade machined steel, this nut offers superior tensile strength and corrosion resistance, ensuring a long‑lasting connection. With dimensions of 3 x 1.2 x 0.8 inches and a lightweight design of just 0.634 ounces, it fits seamlessly into the tight tolerances of GM engines. The part number 12560961 aligns with the manufacturer’s specifications, guaranteeing a perfect match for Chevrolet, Buick, GMC, and Cadillac models.

Usage

Designed for both professional service centers and home garages, this rocker arm nut is ideal for routine engine maintenance, rebuilds, and performance upgrades. It performs reliably under high‑temperature conditions and heavy vibration, making it suitable for daily driving, track days, and heavy‑duty applications. Whether you are replacing a worn fastener or assembling a new engine, the nut’s machined finish ensures easy torque application and consistent clamping force.

Why Choose Us

GM Genuine Parts are developed by the same engineers who design original equipment, ensuring full compatibility with vehicle safety systems. Each nut undergoes rigorous testing for material integrity, dimensional accuracy, and performance under extreme conditions. Our commitment to continuous improvement means the design incorporates the latest materials and manufacturing technologies, delivering a product that outperforms many aftermarket alternatives.

Key Features

• Machined steel construction for maximum strength and corrosion resistance
• Exact OEM dimensions and thread pitch for flawless fit
• Lightweight design reduces overall engine weight without sacrificing durability
• Validated by GM engineers to meet all safety and performance standards
• Easy installation with standard torque tools, saving time on service

FAQ

Is this nut compatible with all GM models?

Yes, the part number 12560961 is approved for Chevrolet, Buick, GMC, and Cadillac engines that use the original equipment rocker arm design.

Can I use this nut as a direct replacement for an aftermarket part?

Absolutely. Because it matches the original specifications, it provides the same reliability and safety as the factory‑installed component.

What torque specification should I use?

Refer to your vehicle’s service manual; typically, the rocker arm nut requires a torque of 25‑30 ft‑lb for proper clamping.

Does the nut require any special coating?

No additional coating is needed. The machined steel finish offers inherent corrosion resistance suitable for most operating environments.

How does this part compare to aftermarket alternatives?

GM Genuine Parts are engineered to the exact OEM standards, ensuring better fit, durability, and compliance with vehicle safety systems compared to generic aftermarket fasteners.