OE Quality
60-Day Returns

Denso 234-5068 Air / Fuel Ratio Sensor - Upstream
Overview of the Denso OE Style Air/Fuel Ratio Sensor 234-5068
The Denso OE Style Air/Fuel Ratio Sensor 234-5068 is designed specifically for select Ford and Lincoln vehicles, including the C-Max, Escape, Focus, Fusion, and MKZ models. This heated sensor ensures accurate air-to-fuel mixture readings, contributing to optimal engine performance and emissions control.
- Heated sensor type for faster response times
- Specific fit for Ford and Lincoln vehicles
- 18.27-inch wiring harness length for precise installation
- Five-wire configuration with male connector
- Thread diameter of 0.711 inches for secure mounting
- Regular grade type for reliable operation
Detailed Product Description
The Denso 234-5068 air/fuel ratio sensor is engineered to provide accurate feedback to the engine control unit by measuring the oxygen content in the exhaust gases. Featuring a heated sensor element, it reaches operating temperature quickly, improving fuel efficiency and reducing emissions. The 18.27-inch wiring harness length allows for proper routing and connection within the engine bay. This sensor includes five wires and a male connector, ensuring compatibility with the vehicle’s existing wiring harness. The thread diameter of 0.711 inches matches OEM specifications for a secure and leak-free installation.
This sensor is a specific fit part, designed to meet the exact requirements of Ford and Lincoln models such as the C-Max, Escape, Focus, Fusion, and MKZ. Using the correct sensor helps maintain engine performance and emission standards.
About the Denso OE Style Product Line
The Denso OE Style product line focuses on delivering parts that closely match original equipment specifications. The OE Style air/fuel ratio sensors are manufactured to meet or exceed OEM standards, ensuring proper fit, function, and durability. The 234-5068 sensor is part of this line, providing a reliable replacement option for vehicles requiring precise emission control components.
Common Applications and Issues Addressed
- Helps resolve poor fuel economy caused by incorrect air/fuel mixture readings
- Reduces rough idling and engine hesitation related to faulty sensors
- Prevents increased emissions and failed emissions tests
- Addresses check engine light triggers related to oxygen sensor faults
- Improves overall engine performance and drivability
Installation Notes and Tips
- Ensure the vehicle is compatible: Ford and Lincoln C-Max, Escape, Focus, Fusion, MKZ
- Disconnect the battery before installation to avoid electrical shorts
- Use proper tools to remove the old sensor and install the new one with the 0.711-inch thread diameter
- Verify the wiring harness length of 18.27 inches is sufficient for your vehicle’s routing
- Check the five-wire connector and ensure the male connector fits securely
Quality Assurance and Warranty
Denso OE Style sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 234-5068 air/fuel ratio sensor undergoes rigorous testing to comply with OEM specifications. Warranty coverage details should be confirmed with the supplier or manufacturer, as they may vary.
| Brand | Denso |
| Part Number | 234-5068 |
| 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 | 18.27 |
This part fits 30 vehicles. Search below:
| Year | Make | Model | Fuel Type | Position | Notes |
|---|---|---|---|---|---|
| 2020 | Ford | Fusion | ELECTRIC/GAS | Upstream | OE Style |
| 2020 | Lincoln | MKZ | ELECTRIC/GAS | Upstream | OE Style |
| 2019 | Ford | Fusion | ELECTRIC/GAS | Upstream | OE Style |
| 2019 | Lincoln | MKZ | ELECTRIC/GAS | Upstream | OE Style |
| 2018 | Ford | C-Max | Upstream | OE Style | |
| 2018 | Ford | Focus | Upstream | OE Style | |
| 2018 | Ford | Fusion | ELECTRIC/GAS | Upstream | OE Style |
| 2018 | Lincoln | MKZ | ELECTRIC/GAS | Upstream | OE Style |
| 2017 | Ford | C-Max | Upstream | OE Style | |
| 2017 | Ford | Focus | Upstream | OE Style | |
| 2017 | Ford | Fusion | ELECTRIC/GAS | Upstream | OE Style |
| 2017 | Lincoln | MKZ | ELECTRIC/GAS | Upstream | OE Style |
| 2016 | Ford | C-Max | Upstream | OE Style | |
| 2016 | Ford | Escape | Upstream | OE Style | |
| 2016 | Ford | Focus | Upstream | OE Style | |
| 2016 | Ford | Fusion | ELECTRIC/GAS | Upstream | OE Style |
| 2016 | Lincoln | MKZ | ELECTRIC/GAS | Upstream | OE Style |
| 2015 | Ford | C-Max | Upstream | OE Style | |
| 2015 | Ford | Escape | Upstream | OE Style | |
| 2015 | Ford | Focus | GAS | Upstream | OE Style |
| 2015 | Ford | Focus | FLEX | Upstream | OE Style |
| 2015 | Ford | Fusion | ELECTRIC/GAS | Upstream | OE Style |
| 2015 | Lincoln | MKZ | ELECTRIC/GAS | Upstream | OE Style |
| 2014 | Ford | C-Max | Upstream | OE Style | |
| 2014 | Ford | Escape | Upstream | OE Style | |
| 2014 | Ford | Fusion | ELECTRIC/GAS | Upstream | OE Style |
| 2014 | Lincoln | MKZ | ELECTRIC/GAS | Upstream | OE Style |
| 2013 | Ford | Escape | Upstream | OE Style | |
| 2013 | Ford | Fusion | ELECTRIC/GAS | Upstream | OE Style |
| 2013 | Lincoln | MKZ | ELECTRIC/GAS | 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.