This is the sensor half only of AEM's Bosch LSU 4.9 wideband kit, for replacing a worn sensor on an existing AEM wideband AFR controller without swapping the whole gauge or controller.

Bosch LSU 4.9 Sensor Specs:

• Laser-etched, factory-calibrated resistor built into the connector body matched to this exact sensor.
• Never needs free-air calibration when paired with an AEM wideband controller.
• Fully welded, sealed housing resists automotive fluids.
• Connector and pins included.

Emissions Note:

This part is legal for sale or uses on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.

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