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Edelbrock replacement narrow‑band O2 sensor and weld‑in bung for ProFlo1 (3500 series) EFI systems. This Bosch three‑wire heated sensor comes with an 18mm weld‑in bung to provide accurate exhaust oxygen feedback for closed‑loop fuel control. Use it to restore O2 sensing on ProFlo1 installations and to assist with carburetor adjustment or EFI tuning where narrow‑band feedback is required.
Edelbrock EFI 02 Sensor and Bung
