Bosch LSU 4.2 Wideband O2 Sensor (UEGO) with NTK/NGK Connector for NGK Powerdex AFX & Ballenger Motorsports AFR500 Compatible with Ballenger Motorsports AFR500 Compatible with Ballenger Motorsports AFR500v2 Compatible with NGK Powerdex AFX Bosch LSU 4.2 Sensor