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Denso 234-4270 Oxygen Sensor - Downstream Left, Downstream Rear or Downstream Right
| Brand | Denso 234-4270 |
|---|---|
| Position | Downstream Right |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 39.37 |
| Product line | OE Style |
| Fits | INFINITI and Nissan · 7 vehicles |
OE style replacement. Precision-built for a first-time fit.
Heated sensor. Helps support efficient engine performance and fuel economy.
Threaded mounting. Specific-fit design for straightforward installation.
Cross-references ACDelco 213-3056, ACDelco 213-3067 and BorgWarner OS1713 for the same application. See all 19.
Denso OE Style Oxygen Sensor 234-4270
Denso 234-4270 is an OE Style heated oxygen sensor built for direct replacement in specific Nissan and INFINITI applications. It uses a threaded mounting design, a 4-wire layout, and a male connector with a 39.37-inch harness for a precise service fit.
Key Features
- Heated oxygen sensor for accurate exhaust feedback
- Specific fit design for direct replacement service
- Threaded mounting with 0.708-inch thread diameter
- 4-wire configuration with male connector
- 39.37-inch wiring harness length
- OE Style construction for factory-style fit and function
OE Style Construction
Denso’s OE Style line is built and tested to OE standards, with attention to exact replacement dimensions and first-time fit. The sensor also uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine performance and fuel efficiency over time. This part number, 234-4270, is a direct-fit option for downstream oxygen sensor service on select Nissan Maxima, Nissan Sentra, and INFINITI I35 applications.
This part cross-references Bosch 15225 and NTK 24634 for the same application.
Vehicle Fitment
- Fits 2002-2004 INFINITI I35, Downstream Right
- Fits 2002-2003 Nissan Maxima, Downstream Rear
- Fits 2001-2002 Nissan Sentra, Downstream Left, Exc. Clean Air Vehicle; Dark Blue Connector; From 08/01/2001; OE Style
Common Issues This Sensor Can Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio feedback from a worn downstream sensor
- Reduced fuel economy caused by inaccurate exhaust readings
- Slow sensor response after contamination or age-related wear
- Emissions test failures tied to faulty sensor output
Installation Notes
Verify connector style, harness length, thread diameter, and sensor position before installation. For the 2001-2002 Nissan Sentra application, confirm the dark blue connector and the build date note from 08/01/2001. Use the listed downstream position only, and match the vehicle application exactly to ensure proper fitment.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for consistent replacement quality and reliable fit. The OE Style design is intended to deliver the correct part and fit for the listed Nissan and INFINITI applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2004 | INFINITI | I35 | Downstream Right | OE Style |
| 2003 | INFINITI | I35 | Downstream Right | OE Style |
| 2003 | Nissan | Maxima | Downstream Rear | OE Style |
| 2002 | INFINITI | I35 | Downstream Right | OE Style |
| 2002 | Nissan | Maxima | Downstream Rear | OE Style |
| 2002 | Nissan | Sentra | Downstream Left | Exc. Clean Air Vehicle; Dark Blue Connector; From 08/01/2001; OE Style |
| 2001 | Nissan | Sentra | Downstream Left | Exc. Clean Air Vehicle; Dark Blue Connector; From 08/01/2001; OE Style |
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