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Denso 234-4241 Oxygen Sensor - Downstream Front, Downstream Left or Downstream Right
| Brand | Denso 234-4241 |
|---|---|
| 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 | 31.89 |
| 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.
Aluminum oxide trap layer. Protects the ceramic element from silicone and lead contamination.
Cross-references ACDelco 213-3095, BorgWarner OS2108 and Bosch 15224 for the same application. See all 13.
Denso OE Style Oxygen Sensor 234-4241
Denso 234-4241 is a specific-fit heated oxygen sensor built to OE-style standards for direct replacement in select Nissan and Infiniti applications. It is engineered for accurate exhaust feedback, stable connector fitment, and dependable operation in downstream sensor locations.
Key Features
- Heated oxygen sensor with a specific-fit design
- 4-wire configuration with male connector
- Threaded mounting with 0.708 in. thread diameter
- 31.89 in. wiring harness length for application-specific routing
- OE Style construction for exact replacement fit
- Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination
OE Style Design and Application
The Denso OE Style line is built for direct replacement where factory fit and sensor response matter. This part number, 234-4241, is used in downstream positions on select 2001-2004 Nissan and Infiniti vehicles, including Fits 2002-2004 INFINITI I35, Downstream Left; Fits 2002-2003 Nissan Maxima, Downstream Front; and Fits 2001-2002 Nissan Sentra, Downstream Right. It cross-references Bosch 15224 for the same application.
What This Sensor Helps Address
- Check engine light concerns related to oxygen sensor performance
- Incorrect air-fuel feedback from a worn downstream sensor
- Reduced fuel economy caused by inaccurate exhaust readings
- Slow sensor response after contamination or age-related wear
- Fitment issues from using a universal sensor instead of a specific-fit replacement
Installation Notes and Tips
Confirm the downstream position, connector style, wire count, and thread size before installation. This sensor uses a threaded mount and a male connector, so matching the original harness and exhaust bung is important for proper installation. For Nissan Maxima, Infiniti I35, and Nissan Sentra applications, verify the exact model year and sensor location against the vehicle’s original configuration.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for consistent replacement quality and first-time fit. The aluminum oxide trap layer is included to help protect the sensing element from common contamination sources and support long-term sensor durability.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2004 | INFINITI | I35 | Downstream Left | Between manifold and pre-catalytic oxygen sensor location.; OE Style |
| 2003 | INFINITI | I35 | Downstream Left | Between manifold and pre-catalytic oxygen sensor location.; OE Style |
| 2003 | Nissan | Maxima | Downstream Front | Between manifold and pre-catalytic oxygen sensor location.; OE Style |
| 2002 | INFINITI | I35 | Downstream Left | Between manifold and pre-catalytic oxygen sensor location.; OE Style |
| 2002 | Nissan | Maxima | Downstream Front | Between manifold and pre-catalytic oxygen sensor location.; OE Style |
| 2002 | Nissan | Sentra | Downstream Right | Exc. Clean Air Vehicle; Green Connector; From 08/01/2001; OE Style |
| 2001 | Nissan | Sentra | Downstream Right | Exc. Clean Air Vehicle; Green Connector; From 08/01/2001; OE Style |
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