AEM's Flex Fuel Ethanol Content Sensor kit measures a vehicle's fuel ethanol content percentage along with fuel temperature, giving programmable engine management systems the data needed to optimize tuning calibration for flex fuel. Pump-labeled E85 can vary significantly from an actual 85% ethanol blend, so this sensor allows the actual fuel blend in use at any given time to be determined and tuned for accordingly.
WarrantyInstallation Instructions
Specifications:
- Measures: Fuel ethanol content percentage and fuel temperature
- Fittings: -6AN
- Compatibility: Most aftermarket standalone ECUs
- Includes: Connector, terminals, and wire seals
- Part Number: 30-2201
FAQ
What does this sensor actually measure?
It measures both the ethanol content percentage of the fuel passing through it and the fuel temperature, sending that data to a compatible standalone ECU for real-time tuning adjustment.
Why not just rely on the E85 label at the pump?
Pump-labeled E85 fuel can vary well away from a true 85% ethanol blend, so this sensor determines the actual ethanol content in use at any given time rather than relying on the label.
What fittings and connectors are included?
The kit uses -6AN fittings and includes the connector, terminals, and wire seals needed for installation.

