![BMW M2, M3 & M4 Bluetooth Flex Fuel Kit for the G8X S58](http://fuel-it.com/cdn/shop/products/Fuel-It-FLEX-FUEL-KIT-for-S58-BMW-G8x-M3-M4-G80-g82-g83_617a0178-ab56-4e7d-9032-623dcc883c16.jpg?v=1676313645&width=1445)
![BMW M2, M3 & M4 Bluetooth Flex Fuel Kit for the G8X S58](http://fuel-it.com/cdn/shop/products/Fuel-It-FLEX-FUEL-KIT-for-S58-BMW-G8x-M3-M4_054bc745-5eb8-4a04-81ff-132ba9ca49f7.jpg?v=1676313645&width=1445)
![BMW M2, M3 & M4 Bluetooth Flex Fuel Kit for the G8X S58](http://fuel-it.com/cdn/shop/files/BMW-CAN-G01-WEBSITE_d3e3fd1c-df90-4ac3-bf54-fc86cb828e4d_1.jpg?v=1700697662&width=1445)
![BMW M2, M3 & M4 Bluetooth Flex Fuel Kit for the G8X S58](http://fuel-it.com/cdn/shop/products/Fuel-It-FLEX-FUEL-KIT-for-S58-BMW-G8x-M3-M4-G80-g82-g83-lines-only_5671617c-a9d1-41ae-96fb-efbe8b8ffb32.jpg?v=1700697662&width=1445)
![BMW M2, M3 & M4 Bluetooth Flex Fuel Kit for the G8X S58](http://fuel-it.com/cdn/shop/products/fuel-it-and-jb4-app-flex-fuel-e85_d2216df1-0dc6-4ea4-8594-7f82f2e059ae.jpg?v=1700697662&width=1445)
![BMW M2, M3 & M4 Bluetooth Flex Fuel Kit for the G8X S58](http://fuel-it.com/cdn/shop/products/fuel-it-flex-fuel-lines-final_32270c13-3c93-4c12-8aa0-f30dce276c24.jpg?v=1700697661&width=1445)
If you're running E85 or ethanol mixes in your G8X M2, M3 or M4, you need this kit!
![](https://cdn.shopify.com/s/files/1/0549/6006/2603/files/fuel-it-logo-white_480x480.svg?v=1679521895)
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 (view E85 mix via Fuel-It! app) OR CANflex ECA (no Fuel-It! app support without the Bluetooth ECA), view E85 mix via JB4 or flash logging)
- 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
- Bluetooth Model Supports stand-alone Bluetooth operation with the Fuel-It! app
- 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 found by clicking here
Replacement fuel lines are also available ala cart.
This kit is compatible with the following:
- 2021+ S58 G80 M3
- 2021+ S58 G82 G83 M4
- 2023+ S58 G87 M2
*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 Bluetooth version connect the white wire to position #4 on the JB4 25 pin harness. Select WMI page option 2/3/4 input to enable.
Click here if you are installing the CANFlex ECA in addition to your flex-fuel kit.
![Fuel It FLEX FUEL sensor KIT for S58 BMW M3 M4 G80 g82 g83 install location](https://cdn.shopify.com/s/files/1/0890/2048/files/S58-flex-fuel-sensor-m3-m4-g80-g82-g83-bmw-install_6406313e-3fda-467e-8ab2-490487e42c41_1024x1024.jpg?v=1636574340)