Weather Guard Side Mount Lo-Side Truck Box [3rd Gen]

When you need gear close at hand but still want your truck bed clear, the WEATHER GUARD Lo-Side Truck Box delivers. Designed for full-size trucks, it mounts securely along the bed rail, giving you quick access to critical tools—without climbing in or sacrificing cargo space.

Secure, Codeable Locking System Across Your Fleet

With the new tamper-resistant push-button lock, you gain added protection and easier control. You can now code multiple boxes to a single key, simplifying access for your entire team or fleet. This added layer of security actively prevents unauthorized entry, helping to keep your tools safe no matter the jobsite.

PowerSync™ Compatibility Adds Smart Convenience

The Lo-Side Truck Box is now PowerSync™ ready, so you can easily add interior lighting or remote keyless entry accessories. This upgrade allows you to access tools even in low-light environments and enhances usability during early mornings or late-night work. Plus, the 90° lid opening gives you full access without interference.

Engineered for Durability and Performance

Crafted from heavy-duty steel or aluminum, the box features a Brite White ARMOR TUF® Powder Coat finish that protects against rust, scratches, and wear. Moreover, it includes reinforced tie-down buckles with added clearance for universal or multi-strap tie-downs. Thanks to its optimized latching system, the box closes effortlessly—no need to slam or struggle.

Key Features

• Mounts securely to the side rails of full-size trucks

• Code multiple boxes to one key with the push-button lock

• Tamper-resistant locking system enhances jobsite security

• 90° lid opening for unobstructed tool access

• Full weather seal keeps tools dry and dust-free

• PowerSync™ compatible for lights and remote entry

• Includes 12V access port for fast electrical integration

• Reinforced tie-down buckles support multiple strap types

• ARMOR TUF® Powder Coat resists corrosion and wear

• Backed by a limited lifetime warranty

If you're searching for a durable side-mount truck toolbox that works smarter and lasts longer, the WEATHER GUARD Lo-Side Truck Box is built to meet those demands—on the job site or the open road.

Shop more upfits by Weather Guard here.