VW MK8 Bluetooth Flex Fuel Kit

  • $479.95
Shipping calculated at checkout.


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


If you're running E85 or ethanol mixes in your VW or Audi, you need this kit!

This is a complete plug and play kit to install a Bluetooth ethanol sensor in your VW Mk8 in about 15 minutes. 

The kit includes the following:

  • Genuine Continental ethanol sensor
  • Two stainless steel braided fuel lines with black nylon sheathing to protect your other engine bay components
  • Proprietary custom billet fittings for plug and play OEM integration
  • Fuel-It! Bluetooth analyzer
  • Includes both Bluetooth App & 5v analog output for JB4 or flash tuning

This kit is compatible with the following

  • 2021+ VW MK8 Golf R
  • 2021+ VW MK8 GTI Clubsport
  • 2021+ Audi S3

*For the VW/Audi JB4 platform connect the white wire to position #16 on the JB4 25 pin harness. Select WMI Ethanol Setup option 1 to enable pin location 15/16 flex fuel input.

*If you aren't sure whether this kit fits your car, send us a picture of your engine bay with the engine cover removed to info@fuel-it.com

*Ethanol Sensors don't actually read the ethanol content, the readings are based on the absence of gasoline, so if your fuel is contaminated your ethanol readings may be artificially elevated.

 Fuel-It! E85 Ethanol Content Tester

Volkswagen MK8 VW gti flex fuel kit E85 fuel it jb4