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The Edelbrock replacement oxygen sensor is a Bosch 4‑wire switching narrow‑band unit for ProFlo2, ProFlo2/XT and Pro‑Tuner EFI systems. It provides closed‑loop feedback to monitor and maintain target air/fuel ratios, serving as a direct replacement to keep the system's oxygen sensing and fuel control functioning as intended in supported Edelbrock EFI installations.
Edelbrock Oxygen Sensor 4-Wire Switching
