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Denso 234-4493 Oxygen Sensor - Upstream
| Brand | Denso 234-4493 |
|---|---|
| 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 | 15.24 |
| Product line | OE Style |
| Fits | Ford · 12 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps the engine run efficiently with faster operating response.
Aluminum oxide trap layer. Protects the ceramic element from contamination for longer life.
Cross-references Bosch 18124, Ford AE8Z9F472A and Ford AE8Z9F472B for the same application. See all 9.
Denso OE Style Oxygen Sensor for Ford Fiesta
Denso 234-4493 is an OE-style heated oxygen sensor built for specific-fit replacement on select Ford Fiesta applications. It is engineered for the upstream position and uses a threaded mounting design with a 4-wire, male connector layout for direct replacement service.
Key Features
- OE Style replacement oxygen sensor from Denso
- Heated sensor design for upstream exhaust monitoring
- Specific fit for select Ford Fiesta models
- 4-wire configuration with male connector
- Threaded mounting type with 0.708 in. thread diameter
- 15.24 in. wiring harness length
Product Details
Denso 234-4493 is manufactured and tested to OE standards for accurate replacement fit and dependable sensor performance. The sensor uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management and fuel control over time. This part cross-references Bosch 18124 for the same application. For buyers searching for a Ford Fiesta upstream oxygen sensor, Denso 234-4493 provides a direct-fit option for 2011-2015 Ford Fiesta and 2016-2019 Ford Fiesta applications listed below.
What This Oxygen Sensor Helps Address
- Check engine light related to upstream oxygen sensor faults
- Incorrect air-fuel ratio readings from a worn sensor
- Reduced fuel economy caused by slow sensor response
- Rough idle or drivability issues tied to exhaust feedback errors
- Emission control faults affecting Ford Fiesta inspection readiness
Installation Notes and Fitment
Fits 2016-2019 Ford Fiesta, Upstream, 4-Pin; OE Style. Fits 2015 Ford Fiesta, Upstream, OE Style. Fits 2011-2013 Ford Fiesta, Upstream, OE Style. Fits 2014 Ford Fiesta, Upstream, 4-Wire Sensor; OE Style. Confirm the connector style, threaded mounting point, and upstream location before installation. This part number is also searched as Denso 234-4493 for Ford Fiesta oxygen sensor replacement.
Quality Assurance
Denso builds this OE Style oxygen sensor to strict original-equipment standards and tests each component for replacement accuracy and first-time fit. The design focuses on consistent signal performance, contamination resistance, and long service life in emission control applications.
| Year | Make | Model | Transmission | Position | Notes |
|---|---|---|---|---|---|
| 2019 | Ford | Fiesta | — | Upstream | 4-Pin; OE Style |
| 2018 | Ford | Fiesta | — | Upstream | 4-Pin; OE Style |
| 2017 | Ford | Fiesta | — | Upstream | 4-Pin; OE Style |
| 2016 | Ford | Fiesta | — | Upstream | 4-Pin; OE Style |
| 2015 | Ford | Fiesta | — | Upstream | OE Style |
| 2014 | Ford | Fiesta | — | Upstream | 4-Wire Sensor; OE Style |
| 2013 | Ford | Fiesta | Manual | Upstream | OE Style |
| 2013 | Ford | Fiesta | — | Upstream | OE Style |
| 2012 | Ford | Fiesta | Manual | Upstream | OE Style |
| 2012 | Ford | Fiesta | Automatic Dual Clutch | Upstream | OE Style |
| 2011 | Ford | Fiesta | Manual | Upstream | OE Style |
| 2011 | Ford | Fiesta | Automatic Dual Clutch | Upstream | OE Style |
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