Mishimoto has developed a silicone throttle body hose for the 1997-2002 Audi S4. The Mishimoto Audi S4 silicone Throttle Body Hose is a direct OEM replacement for the stock rubber hose. The stock rubber throttle body hose, which connects the cold pipes from the turbo up to the throttle body, can wear out from oil, engine heat, and the stock clamp design. These factors, when coupled with the constant movement of the cold pipes, put too much stress on the rubber construction. Deterioration of the rubber can lead to a "boost leak," letting air escape from the connector between the turbo and the engine, robbing the engine of horsepower and reducing overall performance.

 
- Select your color -

 
Direct bolt on

 High quality multi-layers silicone made

 Black, red or blue finish

High heat, cut, fading and cracking resistance