2298-90 Battery Cable Kit for Ford F250 F350 Excursion 7.3L Power Stroke 99-03. 【Pure Copper Made】 2/0 battery cables are made of 100% pure copper (OFC) that improves electrical conductivity. Sheathed by high-quality PVC jacket which effectively prevents cable oxidation, corrosion, and high-temperature resistance, making it more flexible and safe.