Kenworth W900B/W900L Tool & Battery Boxes

Replacement Kenworth W900 Battery Box Steps

Safety is critical when climbing into your cab. If your factory steps are cracked or slippery, upgrade to a new Kenworth W900 battery box step. We offer direct-replacement lower step panels that bolt right onto your existing battery or tool box assembly. Material Options: Choose from lightweight aluminum diamond plate for maximum grip or mirror-polished stainless steel for a show-truck finish. Enhanced Traction: Our steps feature aggressive punch-out tread patterns and deep grooves to stop boots from slipping in mud, snow, or rain. Direct Fit: Designed to replace OEM steps on 40-inch and 45-inch boxes commonly found on W900L and W900B models.

Heavy-Duty Kenworth Step Boxes

Maximize your frame rail space with our selection of Kenworth step boxes. These "saddle boxes" combine the utility of a heavy-duty tool chest with the functionality of a frame step. Versatile Storage: Perfect for storing chains, binders, fluids, and batteries while keeping your deck plate clear. Sizes for Every Rig: Available in widths ranging from 12 inches to 36 inches to fit tight frame spaces. Durability: Constructed from .125-inch thick marine-grade aluminum with weather-sealed locking T-handles to keep your equipment dry and secure.

Precision Fitment & Hard-to-Find Parts

From standard W900L AeroCab setups to vocational rig configurations, we have the sizes you need. We stock standard 30-inch, 40-inch, and 45-inch assemblies complete with lids and mounting hardware. Are you searching for a specific or older configuration, such as a Kenworth 2900 battery box style or a specific 29-inch custom size? Our parts team can help you identify the correct dimensions and mounting brackets to ensure a seamless installation on your truck frame.