30.4" Aluminum Battery Box Bottom Plate Replacement For Peterbilt 389, 379, 385, 377, 378, 357 – TBBZ-020

If the bottom of your Peterbilt's battery box has rusted out or gotten beat up, here's the fix.

This is a heavy-duty aluminum replacement bottom/step for your battery box.

It measures 30.4 inches long and 5 inches wide, designed to fit a range of Peterbilt classic models like the 389, 379, 385, 377, 378, and 357.

It's made by High Performance and comes with a solid 3-year warranty.

Just bolt this new one in place, and your batteries will have a solid foundation again.

Strong, lightweight aluminum that won't rust out on you.