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Denso 234-4703 Oxygen Sensor - Downstream, Downstream Left or Downstream Right
| Brand | Denso 234-4703 |
|---|---|
| Position | Downstream Left |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 50.39 |
| Product line | OE Style |
| Fits | Nissan and INFINITI · 29 vehicles |
OE-style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support quicker operation and consistent performance.
Threaded mounting. Installs with a secure, specific-fit connection.
Cross-references ACDelco 213-1389, ACDelco 213-1390 and ACDelco 213-1492 for the same application. See all 39.
Denso 234-4703 Oxygen Sensor OE Style
Denso 234-4703 is an OE Style heated oxygen sensor built for direct replacement in select Nissan and INFINITI applications. It is engineered for exact fit and stable signal performance, with a threaded mounting design and a specific-fit harness for straightforward replacement.
Key Features
- Heated oxygen sensor for precise exhaust monitoring
- Specific fit design for direct replacement
- 4-wire configuration with male connector
- Threaded mounting type with 0.708 thread diameter
- 50.39 wiring harness length
- OE Style construction for factory-style fit and function
OE Style Design and Application
The Denso OE Style line is built to match original equipment dimensions and connection points for a first-time fit. This sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting consistent engine management performance and long service life. This part cross-references Bosch 13257 and NTK 24543 for the same application. Denso 234-4703 is a direct replacement choice for downstream oxygen sensor service on Nissan Frontier, Nissan Xterra, INFINITI QX4, Nissan Pathfinder, and Nissan Pickup applications.
Vehicle Fitment
- Fits 1999-2003 Nissan Frontier, Downstream Right, OE Style
- Fits 1999-2003 Nissan Frontier, Downstream Left, OE Style
- Fits 2000-2003 Nissan Xterra, Downstream Right, OE Style
- Fits 2000-2003 Nissan Xterra, Downstream Left, OE Style
- Fits 1997-2000 INFINITI QX4, Downstream Left, OE Style
- Fits 1996-2000 Nissan Pathfinder, Downstream Left, OE Style
- Fits 1997 Nissan Pickup, Downstream, OE Style
- Fits 1996 Nissan Pickup, Downstream, From 01/96; OE Style
Common Issues This Sensor Can Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio readings from a worn sensor
- Reduced fuel economy caused by slow sensor response
- Rough idle or drivability concerns tied to exhaust feedback
- Failed emissions inspection due to sensor degradation
Installation Notes and Tips
Confirm the connector style, wire count, and downstream position before installation. Match the threaded mounting location and harness routing to the original sensor on the vehicle. For Nissan Frontier, Nissan Xterra, and Pathfinder service, verify left or right downstream placement against the removed part to ensure correct installation.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and performance. The OE Style design is intended to deliver the correct part and the correct fit for the listed applications.
| Year | Make | Model | Transmission | Position | Notes |
|---|---|---|---|---|---|
| 2003 | Nissan | Frontier | Manual | Downstream Right | OE Style |
| 2003 | Nissan | Frontier | — | Downstream Left | OE Style |
| 2003 | Nissan | Xterra | Manual | Downstream Right | OE Style |
| 2003 | Nissan | Xterra | — | Downstream Left | OE Style |
| 2002 | Nissan | Frontier | Manual | Downstream Right | OE Style |
| 2002 | Nissan | Frontier | — | Downstream Left | OE Style |
| 2002 | Nissan | Xterra | Manual | Downstream Right | OE Style |
| 2002 | Nissan | Xterra | — | Downstream Left | OE Style |
| 2001 | Nissan | Frontier | Manual | Downstream Right | OE Style |
| 2001 | Nissan | Frontier | — | Downstream Left | OE Style |
| 2001 | Nissan | Xterra | Manual | Downstream Right | OE Style |
| 2001 | Nissan | Xterra | — | Downstream Left | OE Style |
| 2000 | INFINITI | QX4 | — | Downstream Left | OE Style |
| 2000 | Nissan | Frontier | Manual | Downstream Right | OE Style |
| 2000 | Nissan | Frontier | — | Downstream Left | OE Style |
| 2000 | Nissan | Pathfinder | — | Downstream Left | OE Style |
| 2000 | Nissan | Xterra | Manual | Downstream Right | OE Style |
| 2000 | Nissan | Xterra | — | Downstream Left | OE Style |
| 1999 | INFINITI | QX4 | — | Downstream Left | OE Style |
| 1999 | Nissan | Frontier | Manual | Downstream Right | OE Style |
| 1999 | Nissan | Frontier | — | Downstream Left | OE Style |
| 1999 | Nissan | Pathfinder | — | Downstream Left | OE Style |
| 1998 | INFINITI | QX4 | — | Downstream Left | OE Style |
| 1998 | Nissan | Pathfinder | — | Downstream Left | OE Style |
| 1997 | INFINITI | QX4 | — | Downstream Left | OE Style |
| 1997 | Nissan | Pathfinder | — | Downstream Left | OE Style |
| 1997 | Nissan | Pickup | — | Downstream | OE Style |
| 1996 | Nissan | Pathfinder | — | Downstream Left | OE Style |
| 1996 | Nissan | Pickup | — | Downstream | From 01/96; OE Style |
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