O2 Sensors

The Holley EFI LSU4 Bosch Wideband is your go-to replacement oxygen sensor for Holley HP, Dominator, Avenger, and Terminator EFI systems. Expertly crafted by Holley EFI, each sensor is meticulously hand-calibrated to ensure precise and accurate readings, optimizing your vehicle's performance. Trust in Bosch's renowned quality and Holley's innovation to keep your system running smoothly.

Elevate your engine's performance with the Holley EFI Oxygen Sensor, designed specifically as a replacement Bosch Wideband sensor for Sniper EFI and Terminator X systems. Featuring pre-applied anti-seize on sensor threads, this service oxygen sensor ensures seamless integration and optimal functionality, keeping your system running smoothly. Holley EFI's trusted quality and precision make this an essential component for maintaining the top performance of your EFI setup. Part Number: 554-155.