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Denso 234-4724 Oxygen Sensor - Upstream Rear
| Brand | Denso 234-4724 |
|---|---|
| Position | Upstream Rear |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 9.84 |
| Product line | OE Style |
| Fits | Mazda · 5 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support faster operation and consistent performance.
Threaded mounting. Installs with a secure, direct-fit connection.
Cross-references BorgWarner OS1752, Bosch 15199 and Delphi ES20038 for the same application. See all 10.
Denso OE Style Oxygen Sensor for Mazda MPV
Denso 234-4724 is a specific-fit heated oxygen sensor built to OE-style dimensions for direct replacement on select Mazda MPV applications. It is engineered for accurate exhaust feedback, stable engine management, and a first-time fit on 2002-2006 Mazda MPV, upstream rear positions.
Key Features
- Heated oxygen sensor for faster operating readiness and consistent signal performance
- Specific fit design for direct replacement on compatible Mazda MPV applications
- 4-wire configuration with male connector and threaded mounting
- Wiring harness length: 9.84 in.
- Thread diameter: 0.708 in.
- OE Style construction from Denso, part number 234-4724
OE Style Construction
Denso’s OE Style line is built around exact replacement fitment and factory-style performance. The sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting long-term signal stability and dependable engine control. For buyers searching for a Mazda MPV upstream rear oxygen sensor, Denso 234-4724 provides a direct-fit solution that matches the application requirements of the vehicle.
This part cross-references Bosch 15199 and NTK 22528 for the same application.
Fitment
- Fits 2002-2006 Mazda MPV, upstream rear.
Common Issues This Sensor Can Address
- Check engine light related to oxygen sensor performance
- Incorrect air-fuel mixture readings from a worn upstream rear sensor
- Reduced fuel economy caused by slow or inaccurate exhaust feedback
- Rough idle or drivability concerns tied to sensor degradation
- Failed emissions testing due to a faulty oxygen sensor
Installation Notes and Tips
Confirm the connector style, wire count, and threaded mounting location before installation. Match the sensor position to the vehicle’s upstream rear location on 2002-2006 Mazda MPV models, and inspect the harness routing to avoid strain or heat damage. For best results, verify the part number 234-4724 against the original sensor before replacement.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for precise replacement fitment and consistent performance. The OE Style design is intended to deliver the correct part and fit for the specified Mazda MPV applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2006 | Mazda | MPV | Upstream Rear | OE Style |
| 2005 | Mazda | MPV | Upstream Rear | OE Style |
| 2004 | Mazda | MPV | Upstream Rear | OE Style |
| 2003 | Mazda | MPV | Upstream Rear | OE Style |
| 2002 | Mazda | MPV | Upstream Rear | OE Style |
| No rows match your filter. | ||||