aFe BladeRunner Intercooler Coupling Kit for Hot Charge Pipe Ford Diesel Trucks 17-22 V8-6.7L (td)These couplings are constructed from high temperature 5 Ply polyester reinforced silicone material. 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 aging, dried out factory charge pipe couplers with aFe POWER BladeRunner silicone coupler kit Hump Couplings Allow for Better Expansion,