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.
Part number: 3591
Manufacturer data for this part — all visible, no tabs to dig through.
| Brand | Edelbrock |
| Part number | 3591 |
| Shipping carton | 6.25 × 5.1 × 2 in (16 × 13 × 5.1 cm) |
| Shipping weight | 0.2 kg (0.35 lb) |
| Wire quantity | 3 |
| Wiring harness length | 9 in |
| Oxygen sensor bung included | Yes; 18mm Bung |
| Connector gender | Female |
| Grade type | Performance |
| Mounting type | Threaded |
| Sensor type | Wide-Band |
| Category | Lighting & Electrical |
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