Fuel-It! FLEX FUEL KIT for S58 BMW G80 M3 & G82 G83 M4

  • $ 479.00
Shipping calculated at checkout.


If you're running E85 or ethanol mixes in your G80 M3 or G82 G83 M4, you need this kit!

Fuel-It Flex Fuel Kit E85

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

This complete flex fuel kit installs in under 30 minutes and reads your exact E85 mixture in the Fuel-It! smartphone app or JB4 app if equipped. Features CNC machined fittings for a quick plug and play installation with nylon sleeved stainless steel braided fuel lines for life long leak free operation.

The complete kit includes the following:

  • Genuine Continental ethanol sensor
  • Fuel-It! Bluetooth Universal Analyzer
  • 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
  • One wiring harness with Posi-tap connector
  • Supports stand-alone Bluetooth operation with the Fuel-It! app

This kit is compatible with the following:

  • 2021+ S58 G80 BMW M3 
  • 2021+ S58 G82 G83 BMW M4

*We have also made it optional  to purchase all the items ala-cart should you choose but for the kit to work it must include the Fuel Lines, Ethanol Sensor, and Analyzer.

*For the BMW G-series JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select WMI page option 2/3/4 input to enable.

 E85 flex fuel sensor for S58 BMW

Fuel It FLEX FUEL sensor for S58 BMW M3 M4 G80 g82 g83 install location

Fuel It FLEX FUEL sensor KIT for S58 BMW M3 M4 G80 g82 g83 install location

Fuel-It! E85 Ethanol Content Tester

Install Video


Fuel-it! App Video


Customer Reviews

Based on 1 review Write a review