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Denso 234-5032 Air / Fuel Ratio Sensor - Upstream
Denso OE Style Air/Fuel Ratio Sensor
The Denso 234-5032 is an OE Style heated air/fuel ratio sensor built for specific-fit replacement on select Ford, Mazda, and Mercury applications. It is engineered for exact replacement dimensions and first-time fit, with a 5-wire design and male connector for direct service on the correct upstream location.
Key Features
- OE Style replacement sensor for emission control service
- Heated sensor design for faster operating temperature
- Specific fit for direct application matching
- 5-wire configuration with male connector
- Wiring harness length: 11.61
- Thread diameter: 0.711
- Part number: 234-5032
Product Details
Denso OE Style sensors are manufactured and tested to OE-level standards, with precision-built components intended to match the original sensor form and function. This air/fuel ratio sensor is a direct replacement for upstream service on 2010 Ford Fusion, 2009-2010 Mazda 6, and 2010 Mercury Milan. If you are searching for a 2010 Ford Fusion upstream air/fuel ratio sensor or a 2009-2010 Mazda 6 upstream sensor, Denso 234-5032 provides the correct fitment profile for those applications. This part cross-references Ford 9E5Z9F472B for the same application.
Common Issues This Sensor May Address
- Check engine light related to air/fuel ratio sensor performance
- Incorrect upstream oxygen sensor or mixture readings
- Rough idle caused by inaccurate fuel trim feedback
- Reduced fuel control response from a worn heated sensor
- Emission control faults tied to sensor signal degradation
Installation Notes and Tips
Verify the upstream sensor location and connector style before installation. Confirm the thread diameter and harness length match the original unit, and inspect the wiring route to avoid strain or contact with hot exhaust components. For best results, compare the old sensor connector and wire count to the replacement before final tightening.
Quality Assurance
Denso manufactures this OE Style sensor to strict original-equipment standards and tests each component for replacement accuracy and fit consistency. The 234-5032 is built as a specific-fit service part for the listed Ford, Mazda, and Mercury applications.
| Brand | Denso |
|---|---|
| Part Number | 234-5032 |
| Position | OE Style, Upstream |
| Connector Gender | Male |
| Grade Type | Regular |
| Sensor Type | Heated |
| Thread Diameter | 0.711 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Wiring Harness Length | 11.61 |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2010 | Ford | Fusion | Upstream | To 08/03/09; OE Style |
| 2010 | Mazda | 6 | Upstream | OE Style |
| 2010 | Mercury | Milan | Upstream | To 08/03/09; OE Style |
| 2009 | Mazda | 6 | Upstream | OE Style |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.