Flex Fuel Sensor

The Chevrolet Performance Flex Fuel Sensor, part number 13577394, is an OEM GM component designed to accurately measure the ethanol content in your vehicle's fuel. This measurement allows the Engine Control Module (ECM) to make precise adjustments to the air/fuel mixture and ignition timing, optimizing performance and efficiency when running on various gasoline and ethanol blends. This flex fuel sensor features long, 3/8" inlets for secure fuel line connection. It utilizes a standard three-wire electrical harness connector, providing essential ground, power, and signal output to the ECM. Manufactured to GM Original Equipment specifications, it ensures direct fit, form, and function. As a universal part for GM cars, this sensor is a common choice in the aftermarket for tuning applications, with references to its use with Haltech and other EFI systems. Its ability to supply accurate readings is critical for engines tuned for flexible fuel capabilities.