Peterbilt Aluminum Battery Box Bottom Step Replacement. Battery Box Bottom Step Replacement. Fits Most Peterbilt Models. Dimensions: 30.5″ L x 7.5″ W. We are a heavy-duty truck parts warehouse with hundreds of thousands of parts for all makes and models. We are always open to taking suggestions or special orders, and we back everything up with the best service and warranties. At Raney’s Truck Center, we are committed to your satisfaction. We want you to be 100% satisfied with your order. If you are not satisfied, please notify us before leaving feedback. We will answer all questions as quickly as possible. All items are continually re-listed. Raney’s Truck Center is proud to offer you the absolute best prices and fastest service for all your aftermarket parts needs. In order to keep our prices low, we require all buyers to adhere to the following terms and conditions. It is your duty to ensure that you meet these requirements, so please take a moment before purchasing our item(s) and make sure that you are within these boundaries. It is your responsibility to ensure that you order the correct part number. It is our desire to always have every listed item actively in stock. Occasionally (but very seldom) due to high demand, short supply or human error we may be momentarily out of stock on an item. We take pride in having the best customer service!