SPOOL B58/S58 Plug and Play Ethanol Sensor Harness
The Spool plug-and-play harness connects a GM ethanol sensor to an auxiliary fuel controller without cutting or soldering wires. One end plugs directly into the sensor and the other into a compatible controller harness.
It is intended for B58 and S58 builds that feed ethanol-content data to an auxiliary controller or flex-fuel system. Confirm the sensor connector and controller input before ordering.




