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Denso 234-4370 Oxygen Sensor - Downstream
| Brand | Denso 234-4370 |
|---|---|
| Position | Downstream |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 12.09 |
| Product line | OE Style |
| Fits | Ford · 9 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps maintain accurate readings for dependable engine performance.
Threaded mount. Specific-fit design installs securely with a male connector.
Cross-references ACDelco 213-1459, ACDelco 213-3879 and BorgWarner OS2244 for the same application. See all 16.
Denso OE Style Oxygen Sensor for Ford Focus
Denso 234-4370 is an OE-style heated oxygen sensor built for specific-fit replacement on select Ford Focus models. It is engineered for downstream use and built to match the original sensor location and connector style for a direct replacement on 2003-2011 Ford Focus applications.
Key Features
- OE Style replacement oxygen sensor from Denso
- Heated sensor design for faster operating readiness
- Specific fit for direct application matching
- 4-wire configuration with male connector
- Threaded mounting with 0.708 in. thread diameter
- 12.09 in. wiring harness length
- Downstream placement for select Ford Focus models
Built for OE-Style Replacement
Denso 234-4370 is manufactured and tested to OE-level standards for accurate replacement fit and dependable sensor performance. The OE Style line is built around exact-match dimensions and connector configuration, helping simplify replacement on the Ford Focus. Denso also uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting consistent engine management and long service life.
This part cross-references Bosch 15753 and NTK 22124 for the same application.
Vehicle Fitment
- Fits 2008-2011 Ford Focus, downstream, OE Style.
- Fits 2003-2007 Ford Focus, downstream, loc. in catalyst; OE Style.
Common Issues This Sensor May Address
- Check engine light related to downstream oxygen sensor performance
- Incorrect air-fuel feedback after catalyst monitoring faults
- Reduced fuel economy caused by a failing oxygen sensor
- Emissions test failures tied to sensor response issues
- Rough or inconsistent engine operation from inaccurate exhaust readings
Installation Notes and Tips
Confirm downstream placement before installation and verify the connector, thread diameter, and wire count match the original sensor. On 2003-2007 Ford Focus models, this sensor is listed for catalyst-mounted downstream use. Inspect the harness routing and connector condition before final installation to help ensure a proper first-time fit.
Quality Assurance
Denso oxygen sensors are built and tested to strict OE standards for fit, function, and durability. The OE Style design is intended to deliver the correct part and the correct fit for the specified Ford Focus applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2011 | Ford | Focus | Downstream | OE Style |
| 2010 | Ford | Focus | Downstream | OE Style |
| 2009 | Ford | Focus | Downstream | OE Style |
| 2008 | Ford | Focus | Downstream | OE Style |
| 2007 | Ford | Focus | Downstream | Loc. In Catalyst; OE Style |
| 2006 | Ford | Focus | Downstream | Loc. In Catalyst; OE Style |
| 2005 | Ford | Focus | Downstream | Loc. In Catalyst; OE Style |
| 2004 | Ford | Focus | Downstream | Loc. In Catalyst; OE Style |
| 2003 | Ford | Focus | Downstream | Loc. In Catalyst; OE Style |
| No rows match your filter. | ||||