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AUDI S4 B8 & B8.5 Flex Fuel Ethanol Content Sensor for E85 Fuel Monitoring

AUDI S4 B8 & B8.5 Flex Fuel Ethanol Content Sensor for E85 Fuel Monitoring

Original price was: $454.95.Current price is: $136.49.
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If you’re running E85 or ethanol mixes in your Audi S4, you need this kit!

Know your exact ethanol content in real-time via the Fuel-it! or JB4 app on your smartphone or tablet.

This is a complete plug and play kit to install a Bluetooth ethanol sensor in your Audi S4 in about 30 minutes. (Check compatibility for your platform below)

Kit includes:

  • New 5/16″ E85 compatible fuel lines for your engine bay
  • Genuine Continental ethanol sensor
  • Fuel-It! Bluetooth analyzer
  • 5/16″ quick connect fitting
  • Oetiker crimp clamps to secure your new fuel lines
  • Includes both Bluetooth App & 5v analog output for JB4 or flash tuning


Download the Fuel-It! ECA app here:

Vehicle Fitment

  • Audi S4 B8
  • Audi S4 B8.5

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