United Pacific – Cab Light Bulb Holder Socket/Plate

Reliable Cab Light Socket & Plate Assembly

Keep your truck’s cab lights shining bright with the United Pacific Cab Light Bulb Holder Socket/Plate. Designed for durability and secure fitment, these sockets are available in both 1-filament and 2-filament versions, making them ideal replacements for worn or damaged units. Built with high-quality materials, they ensure long service life and proper bulb seating.

Part Numbers

• 30938-4 – 1 Filament
• 30938-3 – 2 Filament

Product Features

• Manufacturer: United Pacific
• Available Versions: 1 Filament (30938-4) or 2 Filament (30938-3)
• Application: Cab light bulb holder socket with mounting plate
• Material: Durable molded plastic and metal contacts
• Designed for secure bulb fit and reliable power connection
• Direct replacement for damaged or worn OEM units
• Sold individually

Performance & Fit

These bulb holder sockets are engineered to meet OEM standards for fit and reliability. Whether you need a 1-filament or 2-filament setup, United Pacific provides a direct replacement that installs quickly and delivers consistent performance for your cab lighting system.

Installation

1. Disconnect vehicle power before beginning.
2. Remove the old socket/plate assembly.
3. Install the new United Pacific socket, aligning the mounting plate correctly.
4. Insert the proper bulb and test functionality before driving.

Why You’ll Love It

• Available in 1-filament or 2-filament options
• Durable construction with long service life
• Direct replacement, no modifications required
• Restores reliable cab light function

Common Questions

• Which version do I need? Check your existing cab light bulb setup. 30938-4 is for single-filament bulbs, 30938-3 is for dual-filament bulbs.
• Are bulbs included? No, this listing is for the socket/plate assembly only.
• Is it sold as a pair? No, sold individually.
• Does it fit all trucks? It is designed for select applications. Verify fitment before purchase.

⚠️ California Proposition 65 Warning:This product can expose you to chemicals including compounds used in plastics and metals known to the State of California to cause cancer, birth defects, or other reproductive harm.For more information, visit www.P65Warnings.ca.gov.

Note: Sold individually. Please specify 1 Filament (30938-4) or 2 Filament (30938-3) when ordering.