Electronics for BMW F97 X3 M S58 3.0L

Clear BMW chassis

Please ensure your correct model is selected

BMW fuel system electronics are crucial for the precise operation of your vehicleaEURtms fuel delivery system, optimizing fuel efficiency, and ensuring engine performance. These sophisticated components control essential functions such as fuel injection, fuel pump operation, and sensor data to manage fuel flow, maintain the correct air-fuel mixture, and improve emission control. BMW vehicles may also be equipped with flex fuel systems that adjust the air-fuel ratio depending on the type of fuel being used, allowing for better adaptability to E85 or other ethanol blends. Additionally, fuel pump control modules play a key role in regulating fuel pressure and ensuring the pump operates at optimal levels. Common issues with fuel system electronics include malfunctioning sensors, failing fuel injectors, and damaged fuel pumps or fuel pump control modules, leading to poor fuel economy, engine misfires, or stalling. Solutions to these problems include replacing faulty sensors, upgrading to high-quality fuel injectors, and ensuring the fuel pump control module is functioning correctly. By investing in premium components and performing regular maintenance, these issues can be minimized, extending the lifespan of the fuel system while ensuring peak performance.
Sort By:

BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness
For Vehicles With Motiv ReFlex Unit Currently Installed Only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motiv Motorsports - Corporate Logo
T#:22723690
Part#: 101-0212
In Stock
$ 49.00 USD
Free Shipping on orders $49 and up
$ 49.00 USD
Free Shipping on orders $49 and up

BMW B46 B48 Motiv ReFlex Plug-n-Play Ethanol Sensor Harness simplifies the integration of an ethanol content sensor into your BMW's Re|Flex system. This harness is designed to enhance your vehicle's performance by scaling the sequential port injection based on real-time ethanol content, eliminating the need for manual adjustments. Key benefits include:

  • Effortless Installation: Plug-n-play design makes it easy to connect an ethanol content sensor without extensive modifications.
  • Real-Time Adjustments: Allows for automatic scaling of port injection based on real-time ethanol content, optimizing engine performance.
  • Seamless Integration: For CANbus integrated vehicles, it facilitates integration with the factory DME/ECU (pending feature release by tuning platforms).
  • No Manual Flashes Required: Removes the need for ground disconnection or map switching on your port injection controller.

Please note that the ethanol sensor is not included with this harness.

Show More Show Less
BMW B58 3.0L ReFlex+ Main Injector Harness - Inline-6
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motiv Motorsports - Corporate Logo
T#:29201081
Part#: 900.1008
In Stock
$ 200.00 USD
Free Shipping on orders $49 and up

BMW B58 3.0L ReFlex+ Main Injector Harness - Inline-6 offers a seamless integration solution for your turbocharged BMW inline-6 engine. Designed to work with the Motive ReFlex Control Unit, this plug-n-play harness ensures a hassle-free installation process for your 6 EV6/USCAR injectors.

  • Direct Plug-N-Play Installation: Connects directly to the ReFlex+ Control Unit and your EV6/USCAR injectors.
  • Versatile Connector Options: Includes DTM 3-Pin and 2-Pin connectors for integration with ethanol content sensors and external sensors.
  • Multiple Sensor Connectors: Features connections for a 0-10 Bar Pressure Sensor and a 0-5v sensor.
  • Auxiliary Output Wires: Provides 3x unterminated wires for additional low-side triggers from the ReFlex+ Control Unit.
  • Easy Connection: DTM 8-Pin connector allows for straightforward setup with ReFlex+ Install Harnesses.

Turner Motorsport's harness ensures efficient and reliable performance, streamlining the process of integrating your ReFlex+ Control Unit with your BMW B58 engine.

Show More Show Less
ReFlex+ Install Harness - Flying Lead
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motiv Motorsports - Corporate Logo
T#:29201083
Part#: 900.1016
In Stock
$ 95.00 USD
Free Shipping on orders $49 and up
A flying lead harness is a wiring harness that is unterminated at one end and has an excess length of wire so that installation can be customized by the end user. That makes this section of the ReFlex+ Install Harness truly universal. On one end, this harness has an 8-pin connector to plug into any one of our ReFlex+ Main Injector Harnesses. The other end of each wire is unterminated and will be connected to the appropriate sensor, ground, or power supply based on installation instructions. Each harness has a wire for: Switched +12v Input w/ inline fuse +5v Input Ground Can HI Can Lo Cam Sensor Signal Crank Sensor Signal Map Sensor Signal
Show More Show Less

3/8" Quick Disconnect Adapter With 1/8" NPT Port
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motiv Motorsports - Corporate Logo
T#:29500156
Part#: 200.1105
In Stock
$ 24.00 USD
Free Shipping on orders $49 and up
Quick disconnect adapters (QDA) are commonly used to adapt different components into vehicle fuel systems without requiring permanent modification. These adapters are machined from high-grade aluminum and anodized for corrosion resistance. QDAs incorporate Viton© o-rings which are compatible with most types of fuel, solvents and oils. QDAs maintain a reliable leak-proof seal under normal fuel injection system operating pressures. This particular QDA is sized perfectly to adapt right between the fuel line you were going to connect to your ethanol sensor. 3/8" (9.5mm) female quick disconnect 3/8" (9.5mm) male quick disconnect 1/8" Female pipe thread port * Viton© o-rings Crecent-lock system E-85 compatible Black anodized aluminum
Show More Show Less

Fuel-It! FLEX FUEL KIT For S58 BMW X3M & X4M - Complete Kit With ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fuel-It! - Corporate Logo
T#:15976528
Part#: S58X3MFFK-BTECA
Ships in 3 Business Days
$ 479.99 USD
Free Shipping on orders $49 and up
This is a complete plug-and-play kit to install a Bluetooth ethanol sensor in your X3M or X4M in about 30 minutes. The kit includes the following: New 5/16" E85 compatible fuel lines for your engine bay 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) Plug-and-play harness Includes both Bluetooth App & 5v analog output for JB4 or flash tunin This kit is compatible with the following 2020+ BMW X3M / X3M Competition 2020+ BMW X4M / X4M Competition *For the BMW S58 JB4 platform connect the white wire to position #4 on the JB4 25 pin harness. Select WMI page option 2/3 input to enable. *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.
Show More Show Less
JB4PRO Flex Fuel Add On Harness - B58/S58
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Burger Motorsports - Corporate Logo
T#:49822568
Part#: JB4PB58FFAOH
In Stock
New Item
$ 49.00 USD
Free Shipping on orders $49 and up
Take your B58 or S58 build further with the JB4PRO Flex Fuel Add-On Harness—a simple, plug-and-play way to add an ethanol sensor and optional fuel pressure sensor to your JB4PRO setup. Keep your install clean, your wiring organized, and your tune dialed to match every fuel blend in the tank. Why it matters: Plug & Play: Connects directly to your JB4PRO—no cutting or splicing required. Sensor Ready: Supports ethanol and fuel pressure sensors for precise, real-time fueling adjustments. Clean, Safe Installation: Includes a 12 V adapter and inline fuse for hassle-free integration. How it works: This harness links your JB4PRO tuner to your flex fuel hardware. It’s not a complete flex fuel kit—you still need a compatible ethanol sensor—but it gives your JB4PRO the accurate readings it needs to adjust timing, boost, and fueling for E30, E50, or E85 blends.
Show More Show Less

BM3 FlexFuel Kit - Fuel Hat Location - F97/F98 X3M X4M Pre-LCI ...
For Pre-LCI vehicles only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bootmod3 - Corporate Logo
T#:31390587
Part#: BM3FFKTFH
In Stock
$ 599.00 USD
Free Shipping on orders $49 and up
$ 599.00 USD
Free Shipping on orders $49 and up
BM3 is proud to bring out this truly awesome product that makes getting the required Flex Fuel hardware on your BMW with incredible ease and minimal effort, in your own driveway. BM3's kit is entirely plug-and-play with the factory vehicle harness. No cutting or splicing of OEM wiring/connectors. It installs in minutes and can be removed without a trace on the car! BM3's team used SolidWorks to design a Flow Optimized Flex Fuel Sensor Adapter (FFSA) to ensure fuel flow is unobstructed and with no added pressure drop at full fuel pump flow from the fuel tank to your motor when our kit is installed. This is important when pushing the factory fuel system with all the power Ethanol can provide over petrol! Flex fuel sensor housing is designed to neatly install into the factory BMW fuel hat location. Flex Fuel Sensor Adapter also contains two 1/8 NPT ports that allow installation of an auxiliary Fuel Pressure sensor for vehicles that don’t come with an OEM one from the factory for future use. Depending on fitment, either port can be used. Install the BM3 Flex Fuel Plug and Play Kit and flash your flex fuel enabled BM3 OTS MultiMap or Custom Map in minutes and you’re off to the races never worrying about alcohol/petrol blend % in your fuel tank. It does not get better or easier than this! BM3 FlexFuel Plug and Play Kit: Minutes to install at home as opposed to hours at a shop with car up on lift fabricating/cutting into factory fuel lines and splicing/cutting/pinning into OEM electrical 4+ hours in time/cost savings to get going on Flex Fuel as compared to most other kits that require making custom fuel lines, fittings and custom wiring! Fully reversible/removable and back to stock without a trace in minutes Custom 3-piece Aluminum-6061 Flex Fuel sensor adapter with built-in sensor bypass to allow for obstruction free fuel flow made to fit in the vehicle factory fuel hat area below the rear seat All connecting points sealed with fuel safe Viton o-rings Flex Fuel Sensor Adapter housing provides additional 1/8 NPT ports for optional Fuel Pressure sensor addition to vehicles without a factory one for BM3 CustomROM v2 support CANBUS Enabled Ethanol Content Analyzer (ECA) that integrates with BM3 CustomROM for complete and seamless conversion of your BMW to FlexFuel for BM3 Flex Fuel enabled OTS MultiMaps and custom tunes with your BM3 tuner of choice Power/CANBus 4-wire plug and play harness 100% Fully Plug and Play harness to the BMW Fuel Controller connectors (EKP3) on S55, N55 vehicles 100% Fully Plug and Play harness on the BMW Body Domain Controller (BDC/FEM) connector on Gen1 F-series B48/B58 Continental Flex Fuel sensor 3-wire harness Custom Aluminum-6061 CANBus Enclosure for the BM3 ECA board Custom, kink-free teflon braided line allowing plug-and-play installation with the OEM fuel hat and factory 5/16” or 3/8” fuel feed line. No cutting or new lines required. -6 AN fitting by Racetronix NOTE: OEM FUEL HAT LOCATION KIT IS INTENDED FOR OEM FUEL PUMP AND ASSOCIATED WIRING. ANY VARIATIONS TO FUEL LINES OR FUEL PUMPS MAY NOT BE COMPATIBLE. USE THE ENGINE BAY INSTALLATION KIT WHERE AVAILABLE INSTEAD.
Show More Show Less
BM3 FlexFuel Kit - Engine Bay Location - F97/F98 X3M X4M Pre-LCI ...
For Pre-LCI vehicles only
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bootmod3 - Corporate Logo
T#:31092490
Part#: BM3FFKT
Ships on Jun 22, 2026
8% off MSRP $ 649.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 599.00 USD
Free Shipping on orders $49 and up
8% off MSRP
$ 649.00

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 599.00 USD
Free Shipping on orders $49 and up
BM3 is proud to bring out this truly awesome product that makes getting the required Flex Fuel hardware on your BMW with incredible ease and minimal effort, in your own driveway. BM3's kit is entirely plug-and-play with the factory vehicle harness. No cutting or splicing of OEM wiring/connectors. It installs in minutes and can be removed without a trace on the car! BM3's team used SolidWorks to design a Flow Optimized Flex Fuel Sensor Adapter (FFSA) to ensure fuel flow is unobstructed and with no added pressure drop at full fuel pump flow from the fuel tank to your motor when our kit is installed. This is important when pushing the factory fuel system with all the power Ethanol can provide over petrol! Flex fuel sensor housing is designed to neatly install into the factory BMW fuel hat location. Flex Fuel Sensor Adapter also contains two 1/8 NPT ports that allow installation of an auxiliary Fuel Pressure sensor for vehicles that don’t come with an OEM one from the factory for future use. Depending on fitment, either port can be used. Install the BM3 Flex Fuel Plug and Play Kit and flash your flex fuel enabled BM3 OTS MultiMap or Custom Map in minutes and you’re off to the races never worrying about alcohol/petrol blend % in your fuel tank. It does not get better or easier than this! BM3 FlexFuel Plug and Play Kit: Minutes to install at home as opposed to hours at a shop with car up on lift fabricating/cutting into factory fuel lines and splicing/cutting/pinning into OEM electrical 4+ hours in time/cost savings to get going on Flex Fuel as compared to most other kits that require making custom fuel lines, fittings and custom wiring! Fully reversible/removable and back to stock without a trace in minutes Custom 3-piece Aluminum-6061 Flex Fuel sensor adapter with built-in sensor bypass to allow for obstruction free fuel flow made to fit in the vehicle factory fuel hat area below the rear seat All connecting points sealed with fuel safe Viton o-rings Flex Fuel Sensor Adapter housing provides additional 1/8 NPT ports for optional Fuel Pressure sensor addition to vehicles without a factory one for BM3 CustomROM v2 support CANBUS Enabled Ethanol Content Analyzer (ECA) that integrates with BM3 CustomROM for complete and seamless conversion of your BMW to FlexFuel for BM3 Flex Fuel enabled OTS MultiMaps and custom tunes with your BM3 tuner of choice Power/CANBus 4-wire plug and play harness 100% Fully Plug and Play harness to the BMW Fuel Controller connectors (EKP3) on S55, N55 vehicles 100% Fully Plug and Play harness on the BMW Body Domain Controller (BDC/FEM) connector on Gen1 F-series B48/B58 Continental Flex Fuel sensor 3-wire harness Custom Aluminum-6061 CANBus Enclosure for the BM3 ECA board Custom, kink-free teflon braided line allowing plug-and-play installation with the OEM fuel hat and factory 5/16” or 3/8” fuel feed line. No cutting or new lines required. -6 AN fitting by Racetronix
Show More Show Less

Black Market Parts Universal Fuel Pump Wiring Kit
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Precision Raceworks - Corporate Logo
T#:38195421
Part#: 601-0054
Ships in 6 Business Days
$ 14.99 USD
Free Shipping on orders $49 and up
The Black Market Parts Universal Fuel Pump Wiring Kit is a one-stop shop solution for anyone looking to add an additional fuel pump to their fuel tank. This compact kit provides 6 inches of 100% E85 compliant 12 gauge wiring so you don't have to buy complete spools of wire just to get the little wire you need to extend the pump harness. The kit also includes all hardware for bulk head style pass-through for power used by pump manufacturers around the world. Full stainless bulk head power posts make it easy to add pass-through power to any fuel pump
Show More Show Less