BMW M5, M6 & M8 Bluetooth Flex Fuel Kit for the F1X and F9X with S63TU motor

  • $479.95
Shipping calculated at checkout.


If you're running E85 or ethanol mixes in your BMW M5, M6, or M8 you need this kit!

This is a complete plug & play kit to install a Bluetooth ethanol sensor in about 30 minutes.

(Check compatibility for your platform below)

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

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 (iPhone or Android app must be purchased to use this kit)
  • Plug and play harness
  • Includes both Bluetooth App & 5v analog output for JB4 or flash tuning
      • Bluetooth (iPhone or Android app must be downloaded to use this feature)
      • If you are using an Apple product the app can be found by clicking here
      • If you are using an Android product the app can be clicking here

Replacement fuel lines are also available ala cart.

This kit is compatible with the following:

•2012-2016 F10 M5

•2017-2023 F90 M5

• 2012-2019 F12/F13/F06 M6

• 2019+ F91/F92/F93 M8

*For the BMW F-series JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select WMI Ethanol Setup option 0 to enable pin location 2/3/4 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

*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

S63tu BMW M5 M6 engine