The Peterbilt 379 Aluminum Battery Box Replacement Top Stop is a practical solution for replacing worn-out battery box tops. Made from durable aluminum, this replacement top stop is 31 1/2 inches wide by 7 inches deep, fitting most Peterbilt 379 battery boxes. With its sturdy construction and easy installation, this product ensures the longevity and functionality of your battery box. Upgrade your Peterbilt 379 with this reliable and convenient replacement top stop.