Design Engineering Titanium Protect-A-Sleeve solves the problem of burning, cracking plug wires, lines and hoses from engine and exhaust heat. Titanium Protect-A-Sleeve with LR Technology offers the best possible line sleeve protection on the market. Developed specifically for any application where extreme high heat is present, these Titanium sleeves will protect wires, lines and cables when exposed up to 1800°F direct heat/2500°F radiant. Developed with DEI's proprietary LR Technology, these high temperature rated sleeves provide superior thermal protection for street vehicles or race engines, protecting fuel, oil lines, spark plug and electrical wires from direct or under hood radiant heat. Water and heat resistant, they are also ideal for powersports ATV/UTV, motorcycle, personal watercraft, snowmobiles, and marine use.