Peterbilt 379 Tool & Battery Boxes

Upgrade to Heavy-Duty Battery Boxes & Complete Step Assemblies

Equip your Peterbilt 379 truck with step box storage in smooth aluminum or diamond plate finish, direct OE-style battery box replacements, or visually stunning battery box slip covers made using high-end chrome designs straight from the fab shop. Looking for that custom show truck appearance? Buy a 304-stainless steel step box from CMS. Need an affordable alternative, consider BESTfit diamond plate aluminum step boxes. Experience the benefit of stylizing your Peterbilt 379 while protecting important tools and batteries from the elements:

• Protect the life cycle of your semi-truck tools and batteries.
• Free up cab space by moving storage to the frame.
• Give your truck a cleaner, more organized setup.
• Add a custom look with diamond plate or sunburst-style finishes.
• Boost accessibility with perforated steps.

  Replacement Step Tool Boxes & Battery Boxes for Peterbilt 379

  Get premium stainless steel step boxes and battery boxes for a show-truck finish, alongside decorative engraved patterns, finishes, and pre-integrated lower steps. Explore lightweight aluminum battery box designs for durable weather-sealed storage of your batteries. These feature rugged “new style" step plates with a smooth mirror-polished exterior finish. Find specialty storage solutions like Merritt-made compact storage boxes that come with a hinged door, T-handle, and ergonomic anti-slip steps.

  Peterbilt 379 Battery Box Covers & Decorative Trims

  Available in lightweight paintable fiberglass or shining stainless steel, our battery box covers and permit panels to add the final touches of sleek polished design to your truck’s exterior. Pair your exterior stainless-steel upgrades with Peterbilt 379 deck plates and airline boxes, or add protection with Peterbilt 379 mud guards.

  Replacement Battery Box Lids, Lower Steps & Mounting Hardware

  Swap out any worn-out tops and grip steps with locking lids, and perforated, stainless-steel lower step plates. You can also find heavy-duty mounting brackets to securely bolt your step toolbox onto the Peterbilt 379 frame/chassis.