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Denso 234-4575 Oxygen Sensor - Downstream
| Brand | Denso 234-4575 |
|---|---|
| Position | Downstream |
| Connector Gender | Female |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 26.97 |
| Product line | OE Style |
| Fits | Ford and Lincoln · 37 vehicles |
OE-style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support quicker operation and consistent emissions control.
Threaded mounting. Female connector and 4-wire design for a straightforward install.
Cross-references Bosch 16246, Bosch 16273 and Bosch 16643 for the same application. See all 15.
Denso 234-4575 Oxygen Sensor for Ford and Lincoln
Denso 234-4575 is an OE Style heated oxygen sensor built for exact replacement and first-time fit. It is engineered for downstream applications on select Ford and Lincoln vehicles, including Focus, Escape, Fusion, Taurus, Explorer, Edge, MKC, MKZ, and MKT.
The OE Style line focuses on direct-fit replacement with the correct connector, thread, and harness layout for the application. For drivers searching for a downstream oxygen sensor for a 2012-2018 Ford Focus or a 2013-2016 Ford Fusion, this part number provides a specific-fit solution.
Key Features
- Heated oxygen sensor for downstream emission control applications
- Specific fit design for direct replacement
- 4-wire configuration with female connector
- Threaded mounting type with 0.708 in. thread diameter
- Wiring harness length: 26.97 in.
- OE Style replacement for select Ford and Lincoln models
OE Style Replacement Details
Denso’s OE Style product line is built to match original equipment requirements for fit and function. The sensor uses precision-built components for direct replacement, and the design includes an aluminum oxide trap layer that helps protect the ceramic element from silicone and lead contamination. That construction supports stable engine management, fuel control, and long service life in downstream oxygen sensor applications. Part number 234-4575 is also referenced by cross numbers such as NTK 22536 and Motorcraft DY1163 for the same application.
Vehicle Fitment
- Fits 2012-2018 Ford Focus, downstream
- Fits 2013-2016 Ford Escape, downstream
- Fits 2013-2016 Ford Fusion, downstream
- Fits 2013-2016 Ford Taurus, downstream
- Fits 2015-2016 Lincoln MKC, downstream
- Fits 2013-2016 Lincoln MKZ, downstream
- Fits 2012-2015 Ford Explorer, downstream
- Fits 2013-2015 Lincoln MKT, downstream
- Fits 2012-2014 Ford Edge, downstream
Common Issues This Sensor Can Address
- Check engine light related to oxygen sensor performance
- Incorrect downstream air-fuel feedback readings
- Reduced fuel economy caused by a failing sensor
- Emission test failures tied to sensor response issues
- Rough or inconsistent engine operation from degraded sensor output
Installation Notes and Quality Assurance
Verify the connector style, wire count, thread diameter, and downstream location before installation. This is a specific-fit sensor for select Ford and Lincoln applications, so matching the vehicle year, model, and position is important for proper installation. Denso manufactures and tests these oxygen sensors to OE standards for consistent fit and performance.
Quality control includes precision manufacturing and application-specific testing to support correct replacement on the listed vehicles. The OE Style design is intended to deliver the right part and the right fit for the application.
| Year | Make | Model | Submodel | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2018 | Ford | Focus | ST | — | Downstream | OE Style |
| 2017 | Ford | Focus | — | — | Downstream | OE Style |
| 2016 | Ford | Escape | — | — | Downstream | OE Style |
| 2016 | Ford | Focus | — | — | Downstream | OE Style |
| 2016 | Ford | Fusion | — | GAS | Downstream | OE Style |
| 2016 | Ford | Taurus | — | — | Downstream | OE Style |
| 2016 | Lincoln | MKC | — | — | Downstream | OE Style |
| 2016 | Lincoln | MKZ | — | GAS | Downstream | OE Style |
| 2015 | Ford | Escape | — | — | Downstream | OE Style |
| 2015 | Ford | Explorer | — | — | Downstream | OE Style |
| 2015 | Ford | Focus | — | — | Downstream | OE Style |
| 2015 | Ford | Fusion | — | GAS | Downstream | OE Style |
| 2015 | Ford | Taurus | — | — | Downstream | OE Style |
| 2015 | Lincoln | MKC | — | — | Downstream | OE Style |
| 2015 | Lincoln | MKT | — | — | Downstream | OE Style |
| 2015 | Lincoln | MKZ | — | GAS | Downstream | OE Style |
| 2014 | Ford | Edge | — | — | Downstream | OE Style |
| 2014 | Ford | Escape | — | — | Downstream | OE Style |
| 2014 | Ford | Explorer | — | — | Downstream | OE Style |
| 2014 | Ford | Focus | — | — | Downstream | OE Style |
| 2014 | Ford | Fusion | — | GAS | Downstream | OE Style |
| 2014 | Ford | Fusion | — | — | Downstream | OE Style |
| 2014 | Ford | Taurus | — | — | Downstream | OE Style |
| 2014 | Lincoln | MKT | — | — | Downstream | OE Style |
| 2014 | Lincoln | MKZ | — | GAS | Downstream | OE Style |
| 2013 | Ford | Edge | — | — | Downstream | OE Style |
| 2013 | Ford | Escape | — | — | Downstream | OE Style |
| 2013 | Ford | Explorer | — | — | Downstream | OE Style |
| 2013 | Ford | Focus | — | — | Downstream | OE Style |
| 2013 | Ford | Fusion | — | GAS | Downstream | OE Style |
| 2013 | Ford | Fusion | — | — | Downstream | OE Style |
| 2013 | Ford | Taurus | — | — | Downstream | OE Style |
| 2013 | Lincoln | MKT | — | — | Downstream | OE Style |
| 2013 | Lincoln | MKZ | — | GAS | Downstream | OE Style |
| 2012 | Ford | Edge | — | — | Downstream | OE Style |
| 2012 | Ford | Explorer | — | — | Downstream | OE Style |
| 2012 | Ford | Focus | — | — | Downstream | OE Style |
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