Holley EFI Bosch Wideband 02 Sensor
Holley Part #: 554-101
Replacement Holley EFI, Bosch Wide band Oxygen sensor. This sensor is a direct replacement for Holley HP, Dominator, Avenger and Terminator EFI systems.
Each Sensor is hand calibrated to insure accurate readings when used in conjunction with your Holley EFI system.