Overview
The AEM Electronics Bosch LSU 4.2 Replacement Wideband O2 Sensor is a direct factory replacement sensor for first-generation AEM wideband gauges and controllers. Individually factory tested, it ensures exact air/fuel ratio calibration and rapid closed-loop tuning accuracy.
Features
- Direct replacement wideband oxygen sensor for older AEM wideband controllers (30-4100 series)
- Pre-terminated with factory connector for quick, plug-and-play replacement
- Features lab-calibrated internal reference resistor for precise AFR tracking
- Compatible with gasoline, race fuels, and ethanol blends
- High-temperature stainless steel body withstands harsh exhaust conditions
Vehicle Fitment
- Universal fitment — compatible with custom and standalone engine management installations.
AEM Electronics Bosch LSU 4.2 Replacement Wideband O2 Sensor (30-2001)
AEM Electronics Bosch LSU 4.2 Replacement Wideband O2 Sensor (30-2001)
SKU:AEM 30-2001
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.






