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Denso 234-3306 Oxygen Sensor - Upstream Left
| Brand | Denso 234-3306 |
|---|---|
| Position | Upstream Left |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 3 |
| Wiring Harness Length | 37.01 |
| Product line | OE Style |
| Fits | INFINITI and Nissan · 2 vehicles |
OE-style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support improved engine performance and fuel efficiency.
Threaded mounting. Specific-fit design with a male connector and 3-wire harness.
Cross-references ACDelco 213-2942, Bosch 15355 and Datsun/Nissan 226914W000 for the same application. See all 9.
Denso OE Style Oxygen Sensor 234-3306
Denso 234-3306 is a heated, specific-fit oxygen sensor built for direct replacement in select Nissan and INFINITI applications. It is engineered to match OE-style fit and signal performance for accurate exhaust monitoring and dependable drivability.
Key Features
- OE Style replacement oxygen sensor from Denso
- Heated sensor design for faster operating temperature
- Specific fit with threaded mounting for direct installation
- 3-wire configuration with male connector
- 37.01 in. wiring harness length
- 0.708 in. thread diameter
Fitment and Application
Compatible with 2001 INFINITI QX4, upstream left. Compatible with 2001 Nissan Pathfinder, upstream left, for vehicles built to 08/00. This Denso 234-3306 oxygen sensor is a direct-fit option for drivers searching for a 2001 INFINITI QX4 upstream left oxygen sensor or a 2001 Nissan Pathfinder upstream left oxygen sensor.
The OE Style product line is focused on exact replacement fitment and factory-style performance. Denso builds this sensor to strict OE standards and uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and long service life.
What This Sensor Helps Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel mixture readings
- Reduced fuel economy from a failing upstream sensor
- Slow sensor response during closed-loop operation
- Rough idle or drivability issues tied to exhaust feedback
Installation Notes and Tips
Verify the upstream left location before ordering and match the connector, wire count, and thread size to the original sensor. Because this is a specific-fit threaded sensor, proper routing of the 37.01 in. harness is important to keep the wiring away from heat and moving components. Always confirm vehicle build date on the 2001 Nissan Pathfinder application, since the listed fitment applies to units built to 08/00.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for consistent fit and function. Part number 234-3306 is designed as a direct replacement for the listed applications and is backed by Denso’s OE-style engineering approach.
This part cross-references ACDelco 213-2942 and Bosch 15355 for the same application.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2001 | INFINITI | QX4 | Upstream Left | OE Style |
| 2001 | Nissan | Pathfinder | Upstream Left | To 08/00; OE Style |
| No rows match your filter. | ||||