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Denso 234-3083 Oxygen Sensor - Downstream or Upstream
| Brand | Denso 234-3083 |
|---|---|
| Position | Downstream |
| Connector Gender | Female |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 3 |
| Wiring Harness Length | 17.83 |
| Product line | OE Style |
| Fits | Subaru · 8 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support faster operation and efficient engine performance.
Threaded mount. Specific-fit design with a female connector for straightforward installation.
Cross-references ACDelco 213-1272, ACDelco 213-1290 and BorgWarner OS591 for the same application. See all 23.
Denso OE Style Oxygen Sensor for Subaru
Denso 234-3083 is a specific-fit heated oxygen sensor built to OE-style dimensions for direct replacement on select Subaru applications. It is engineered for upstream placement on 1990-1994 Subaru Legacy and 1993-1995 Subaru Impreza, with the correct connector, thread size, and harness length for a first-time fit.
Key Features
- Heated oxygen sensor for upstream exhaust monitoring
- Specific fit for select Subaru Legacy and Subaru Impreza applications
- 3-wire design with female connector
- Threaded mounting with 0.708 in. thread diameter
- 17.83 in. wiring harness length
- OE Style replacement from Denso, part number 234-3083
OE Style Construction
Denso’s OE Style line is built and tested to OE standards for accurate replacement fit and dependable sensor performance. This Denso oxygen sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and fuel economy over time. The 234-3083 is a direct-fit choice for drivers servicing Subaru Legacy and Subaru Impreza upstream sensor locations.
This part cross-references Bosch 13250 and NTK 24614 for the same application.
What This Oxygen Sensor Helps Address
- Check engine light caused by a failing upstream oxygen sensor
- Rough idle or inconsistent air-fuel feedback
- Reduced fuel economy from inaccurate exhaust readings
- Slow sensor response during closed-loop operation
- Emissions test failures related to oxygen sensor performance
Installation Notes
Verify upstream position, connector style, wire count, and thread diameter before installation. This Denso 234-3083 oxygen sensor is a threaded, specific-fit replacement, so matching the original Subaru Legacy or Subaru Impreza sensor configuration is important for proper installation. Confirm the harness routing and connector location against the original part before final tightening.
Quality Assurance
Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards for fit and function. The design focuses on accurate replacement, correct application matching, and long-term sensor protection in demanding exhaust conditions.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1995 | Subaru | Impreza | Upstream | OE Style |
| 1994 | Subaru | Impreza | Upstream | OE Style |
| 1994 | Subaru | Legacy | Upstream | OE Style |
| 1993 | Subaru | Impreza | Upstream | OE Style |
| 1993 | Subaru | Legacy | Upstream | OE Style |
| 1992 | Subaru | Legacy | Upstream | OE Style |
| 1991 | Subaru | Legacy | Upstream | OE Style |
| 1990 | Subaru | Legacy | Upstream | OE Style |
| No rows match your filter. | ||||