These couplings feature high temperature 5-Ply reinForced silicone material which meet or exceed SAEJ20 Standard. The lower intercooler hose also features built-in metal inserts to withstand extreme amounts of boost pressure while keeping from expanding. Hassle-Free Installation AFE Replacement Couplings and Clamps Heavy Duty High Temp 5 Ply Polyester VEHICLE FITMENT 2007-2010 BMW 335i (Aspiration: Turbocharged & Engine Designation: N54B30A & Liter: 3.0 & Cylinder: 6 & Block: L & Fuel: GAS & Mfr Body Code: E92) 2008 BMW 335xi (Aspiration: Turbocharged & Engine Designation: N54B30A & Liter: 3.0 & Cylinder: 6 & Block: L & Fuel: GAS & Mfr Body Code: E92) 2009-2010 BMW 335i xDrive (Aspiration: Turbocharged & Engine Designation: N54B30A & Liter: 3.0 & Cylinder: 6 & Block: L & Fuel: GAS & Mfr Body Code: E92)