- Tool & Battery Box Cover Set Peterbilt 379 `97+ 6 Pc Stainless SteelSpecial Price $179.99 Regular Price $199.99PX-A655002Battery Box Cover Each Peterbilt 379,388,389 30" X 13 5/16" Stainless SteelSpecial Price $81.89 Regular Price $90.99PX-A651002Tool Box / Dpf Cover Each Peterbilt 389 43.625" X 12.500" Angled Stainless SteelSpecial Price $150.29 Regular Price $166.99PX-A651017Tool Box / Dpf Cover Each Peterbilt 41" X 12.750" Flat Stainless SteelSpecial Price $122.39 Regular Price $135.99PX-A651015