Overview
The AEM Electronics Bosch LSU 4.9 Replacement Wideband O2 Sensor is the genuine replacement sensor for AEM X-Series widebands and modern 30-4110 digital gauges. Delivering superior thermal stability, lower power consumption, and longer service life, it guarantees accurate AFR measurement across all fuel types.
Features
- Genuine Bosch LSU 4.9 wideband oxygen sensor with factory-terminated connector
- Direct replacement for AEM X-Series wideband gauges and 30-4110 digital controllers
- Advanced planar ceramic sensing element delivers rapid response and robust lead tolerance
- Factory-calibrated internal reference resistor requires zero free-air field calibration
- Compatible with pump gas, race fuel, and E85 ethanol
Vehicle Fitment
- Universal fitment — compatible with custom and standalone engine management installations.
AEM Electronics Bosch LSU 4.9 Replacement Wideband O2 Sensor (30-2004)
AEM Electronics Bosch LSU 4.9 Replacement Wideband O2 Sensor (30-2004)
SKU:AEM 30-2004
In stock
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Shipping & Returns
Shipping charges are non-refundable.
30-day return window from delivery. Items must be unused, uninstalled, and in original packaging with tags/seals intact. Installed, modified, or used parts (including wheels and tires) can't be returned. Open-box, clearance, and overstock items are final sale.
A restocking fee may apply.
Please contact us for return authorization before shipping anything back.
