Grand General – Chrome Plastic Computer Dash Control Knob

Chrome Plastic Computer Dash Control Knob with Base for Peterbilt

Enhance the look and feel of your dashboard with the Grand General Chrome Plastic Computer Dash Control Knob with Base. Designed for Peterbilt 378, 379, 386, 388, and 389 models manufactured after 2006, this replacement knob delivers both style and functionality. Its durable chrome-plated plastic construction provides a long-lasting shine and a professional finish that complements your truck’s interior perfectly.

• Manufacturer: Grand General
• Item Number: 68636
• Material: Chrome-plated ABS plastic
• Finish: Mirror-polished chrome for a high-end look
• Fits: Peterbilt 378, 379, 386, 388, and 389 models (2006 and newer)
• Design: Replacement dash control knob with integrated base
• Applications: Computer or multifunction dash control knob

Performance & Fit

Each control knob is precision-molded to match OEM dimensions, ensuring smooth rotation and a secure fit. The chrome finish resists fading and wear, even with daily use. Perfect for restoring your dash or upgrading your cab’s style, this control knob provides lasting durability and comfort during operation.

Installation

1. Remove the existing dash control knob carefully from its mount.
2. Align the Grand General replacement knob and press into the base.
3. Ensure a snug fit and smooth turning motion before use.
4. Test operation of the connected control system.

Why You’ll Love It

• Designed specifically for Peterbilt 378, 379, 386, 388, and 389 (2006+)
• Durable chrome plastic construction with mirror finish
• Easy direct-fit replacement for factory knobs
• Resists cracking, fading, and peeling
• Enhances the dashboard’s professional look

Common Questions

• Will it fit older Peterbilt models? No — it’s designed for 2006 and newer 378, 379, 386, 388, and 389 models.
• Is it compatible with all dash controls? It fits standard Peterbilt computer or multifunction control systems.
• Do I need tools for installation? No — it installs easily by hand as a direct-fit replacement.

⚠️ California Proposition 65 Warning:This product can expose you to chemicals including lead and nickel compounds, known to the State of California to cause cancer and reproductive harm.For more information, visit www.P65Warnings.ca.gov.

Note: Designed for Peterbilt 378, 379, 386, 388, and 389 models (2006 and newer). Direct replacement for factory dash control knobs.