Mishimoto MMHOSE-AUD-TBRD Audi S4 Silicone Throttle Body Hose, 2000-2002, Red Direct fit for 20002002 Audi S4 Inner Diameter: W: 0.63 X: 2.05 Y: 2.05 Z: 2.95 Outer Diameter: W: 0.93 X: 2.32 Y: 2.32 Z: 3.23 High grade silicone and heat-resistant embedded fibers feature max temp of 330F Mishimoto Lifetime Warranty Interior material is heat resistant embedded fibers Exterior material is silicone Maximum temperature is 330 degrees Fahrenheit Available in red Limited lifetime warranty