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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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🇺🇸 Ship from USA · On Agora since 2026
$454.95