The Thermotec Thermo-Sleeves protect vital hoses and wires in your engine bay from high temperatures. Thermo-Sleeves are perfect for oil or coolant lines that run close to your turbo or exhaust manifold. The light-weight construction provides more insulating than traditional bulky rubber-coated fiberglass. The aluminized sleeving reflects over 90% of radiant heat, and is fireproof and oil resistant. Thermo-Sleeves are sold in three or twelve foot sections, and five different inner diameter sizes.