/live/media/NP/NP_2344524_Fro.jpg)
Denso 234-4524 Oxygen Sensor - Upstream
| Brand | Denso 234-4524 |
|---|---|
| Position | Upstream |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 13.78 |
| Product line | OE Style |
| Fits | Scion and Toyota · 9 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support quicker operation and consistent performance.
Aluminum oxide trap layer. Protects the ceramic element from contamination for longer life.
Cross-references ACDelco 213-3057, BorgWarner OS1572 and Bosch 15274 for the same application. See all 9.
Denso OE Style Oxygen Sensor 234-4524
Denso 234-4524 is an OE Style heated oxygen sensor built for exact replacement and first-time fit. It is engineered for specific applications on the Scion xA, Scion xB, and Toyota Echo, with OE-level construction for accurate exhaust feedback and stable engine management.
Key Features
- Heated oxygen sensor with specific fitment
- 4-wire design with male connector
- Threaded mounting type for direct replacement
- Wiring harness length: 13.78
- Thread diameter: 0.708
- OE Style replacement for 2003-2006 Toyota and Scion applications
OE Style Design and Application
The Denso OE Style line is built to match original equipment requirements for fit, form, and function. This oxygen sensor uses precision-built components and Denso’s protective aluminum oxide trap layer to help shield the ceramic element from silicone and lead contamination, supporting consistent sensor response and long service life. Part number 234-4524 is a direct-fit choice for upstream sensor locations on the Toyota Echo, Scion xA, and Scion xB.
This part cross-references Bosch 15274 and NTK 24411 for the same application.
Vehicle Fitment
- Fits 2004-2006 Scion xA, Upstream, OE Style
- Fits 2004-2006 Scion xB, Upstream, OE Style
- Fits 2003-2005 Toyota Echo, Upstream, OE Style
Common Issues This Sensor May Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel ratio feedback to the engine control system
- Reduced fuel economy caused by a worn upstream sensor
- Slow sensor response during closed-loop operation
- Emissions test failures tied to sensor degradation
Installation Notes and Tips
Confirm the upstream sensor location, connector style, wire count, and thread diameter before installation. Compare the original sensor’s harness length and mounting style to the replacement part number 234-4524 to ensure proper routing and secure threaded installation.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for accurate replacement fitment and dependable operation. The OE Style design is intended to match original equipment specifications for the listed Scion and Toyota applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2006 | Scion | xA | Upstream | OE Style |
| 2006 | Scion | xB | Upstream | OE Style |
| 2005 | Scion | xA | Upstream | OE Style |
| 2005 | Scion | xB | Upstream | OE Style |
| 2005 | Toyota | Echo | Upstream | OE Style |
| 2004 | Scion | xA | Upstream | OE Style |
| 2004 | Scion | xB | Upstream | OE Style |
| 2004 | Toyota | Echo | Upstream | OE Style |
| 2003 | Toyota | Echo | Upstream | OE Style |
| No rows match your filter. | ||||