Upgrade your Peterbilt 379 or 389 with this high-quality battery box lid featuring an integrated top step. This lid is crafted for durability and performance, designed specifically to fit Peterbilt 379 and 389 truck models. Proudly built as a quality American-made product, this lid combines rugged construction with practical utility. Custom Fit: Designed specifically for Peterbilt 379 and 389 trucks. Integrated Top Step: Includes a built-in step for added convenience. Durable Materials: Features aluminum diamond plate construction. Robust Gauge Specs: The lid is constructed from 11-gauge stainless steel, and the punch step is made from 14-gauge stainless steel. Quality Assurance: This is a quality American-made product. Product: Battery Box Lid w/ Top Step. Compatibility: Fits Peterbilt 379 and 389 models. Construction: Aluminum Diamond Plate. Gauges: 11 Gauge Stainless Steel (Lid) / 14 Gauge Stainless Steel (Step). Dimensions: 30″ Length, 20″ Depth, 15.5″ Height (16″ Step Depth). Included: Lid only (does not include the box or strap kit). ?? Fast U. ?? Secure packaging with quick order processing.