[PREMIUM PERFORMANCE] - Bosch Air Temperature Sensors measure the temperature of the incoming air to the engine - this information is provided to the Engine Control Module (ECU) to determine the correct amount of fuel needed [ACTUAL OE] - Bosch Original Equipment Intake Air Temperature Sensors aren't just a quality replacement component, they're the same sensor your vehicle was equipped with when manufactured - minus the expense of brand name packaging [HIGHLY RELIABLE] - Highly durable design resists damage from fuel, oil, and water intrusion into the intake system ensuring long-term reliability [SUPERIOR ENGINEERING] - Sturdy, vibration-proof design offers lasting performance and highest accuracy under extreme conditions: -40°F to +260°F Compatible with select vehicles (Note: engine may affect fitment - verify specific vehicle fitment details with fit checker above): AUDI: 1997-01,2003-06 A4, 1997-01,2003-05 A4 Quattro, 1998-01 A6, 1998-02 A6 Quattro, 2001-05 Allroad Quattro Compatible with (continued): AUDI: 2000-02 S4, 2000-06 TT, 2000-06 TT Quattro; PORSCHE: 1996-97 911; VOLKSWAGEN: 1999-01,2003 Beetle, 2000-06 Golf, 2000-03 Jetta, 1998-05 Passat