aFe BladeRunner Intercooler Coupling Kit for Cold Charge Pipe Kit Ford Diesel Trucks 08-10 V8-6.4LThese couplings are constructed from high temperature 5 Ply polyester reinforced silicone material for better tear resistance. These hoses allow for expansion, movement, and extreme vibration between two hard pipes while reducing the possibility of connections coming apart or having your pipes or other equipment break. Directly replace your Super Dutys aging, dried out factory charge pipe couplers with aFe POWER's BladeRunner tear resistant silicone