R35 GT-R AEM UEGO Replacement O2 Sensor Bosch LSU 4.2

These sensors have a laser-etched, calibrated resistor in the sensor's connector body. This resistor is specifically created for the exact sensor that it is attached to. Modifying this will invalidate the sensor's output. The wideband sensor is laboratory-calibrated at the Bosch factory, accurate to 0.1 AFR and never requires free-air calibration when used with an AEM wideband AFR controller. 

Accurate to 0.1 AFR
Never requires free-air calibration when used with an AEM Controller and connector plug.
Specifically designed for use with AEM Wideband UEGO controllers
Replacement sensor only 

Replacement Sensor for the following AEM Wideband Controllers. 

AEM Infinity Engine Management Systems
30-4100 - Digital Wideband UEGO Gauge
30-4900 - Wideband Failsafe Gauge
30-2310 - Inline Wideband UEGO Controller
30-2340 - 4-Channel Wideband UEGO Controller
30-2340-N - 4-Channel Wideband UEGO Controller - Nascar
30-5130 - Analog Wideband UEGO Gauge
30-5143 - Analog E85 Wideband UEGO Gauge
30-2320 - X-WiFi Wideband/EGT Controller

For Digital Wideband UEGO Controller Part Number 30-4110 please refer to the 30-2004 Bosch LSU 4.9 Replacement UEGO Sensor PN 30-20