Edelbrock · New
Edelbrock EFI 02 Sensor and Bung
MPN 3591 · Store SKU ede3591
Supplier stock checked 11/7/2026, 11:52:30 AM UTC. Adding a part does not reserve it.
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Product details
The Edelbrock #3591 is a Replacement Narrow-Band Oxygen Sensor For ProFlo1 (#3500 Series) EFI Systems. It is a Bosch 3-Wire, Heated Sensor. It includes Replacement O2 Sensor and Weld-In Bung. Replacement Oxygen Sensor Part #3591 For ProFlo1 EFI, Bosch 3-Wire And 18mm Bung. Narrow-Band. Oxygen Sensor for Pro-Flo 1 EFI, Bosch 3-Wire, Narrow-Band Performer Series Air/Fuel Ratio Monitor Oxygen Sensor EFI 02 SENSOR/BUNG
Manufacturer fitment & guides
Check 3591 against the manufacturer’s application information below.
Part-specific notes
- California Proposition 65: Y