OE Quality
60-Day Returns

Denso 234-9029 Air / Fuel Ratio Sensor - Upstream
Overview of the Denso OE Style Air/Fuel Ratio Sensor
The Denso OE Style Air/Fuel Ratio Sensor 234-9029 is designed specifically for Jaguar vehicles, including the X-Type, XK8, and XKR models. This heated sensor ensures accurate air and fuel mixture readings to support optimal engine performance and emissions control.
- Heated sensor type for faster response times
- Specific fit for Jaguar X-Type, XK8, and XKR
- 17.72-inch wiring harness length for precise installation
- Four-wire configuration with female connector
- Thread diameter of 0.711 inches for secure mounting
- Regular grade type for reliable operation
Detailed Product Description
The Denso 234-9029 air/fuel ratio sensor is engineered to provide accurate oxygen level readings in the exhaust system, helping the engine control unit maintain the correct air-to-fuel ratio. This sensor features a heated element to reduce warm-up time, improving fuel efficiency and reducing emissions. With a wiring harness length of 17.72 inches and a four-wire setup, it offers compatibility with the specific electrical systems of Jaguar X-Type, XK8, and XKR models. The female connector and 0.711-inch thread diameter ensure a secure and precise fit, minimizing installation issues.
About the Denso OE Style Product Line
The OE Style line from Denso focuses on delivering parts that meet original equipment specifications for direct replacement. This air/fuel ratio sensor is part of that line, designed to match the exact fit, form, and function of the factory-installed sensor in Jaguar vehicles. Choosing the OE Style sensor helps maintain the vehicle’s emission control system integrity and performance.
Common Applications and Issues Addressed
- Restores accurate air/fuel mixture readings for Jaguar X-Type, XK8, and XKR
- Helps resolve rough idling and poor fuel economy caused by faulty sensors
- Reduces engine hesitation and misfires related to incorrect oxygen sensor data
- Supports emission system compliance by providing precise exhaust gas measurements
- Prevents check engine light triggers related to air/fuel ratio sensor faults
Installation Notes and Tips
When installing the Denso 234-9029 sensor, ensure the wiring harness length of 17.72 inches is sufficient for your vehicle’s routing. The female connector should match the factory harness plug for a secure connection. Use appropriate tools to avoid damaging the 0.711-inch threaded sensor body during installation. It is recommended to check for any exhaust leaks after installation to ensure sensor accuracy.
Quality Assurance and Warranty
Denso manufactures this air/fuel ratio sensor to meet strict quality standards, ensuring reliable performance and durability. The OE Style product line is designed to meet original equipment specifications, providing confidence in fit and function. Warranty details are typically provided by the distributor or retailer and should be confirmed at the time of purchase.
| Brand | Denso |
| Part Number | 234-9029 |
| Position | OE Style, Upstream |
| Connector Gender | Female |
| Grade Type | Regular |
| Sensor Type | Heated |
| Thread Diameter | 0.711 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 17.72 |
This part fits 13 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2008 | Jaguar | X-Type | Upstream | OE Style |
| 2007 | Jaguar | X-Type | Upstream | OE Style |
| 2006 | Jaguar | X-Type | Upstream | OE Style |
| 2005 | Jaguar | X-Type | Upstream | OE Style |
| 2005 | Jaguar | XK8 | Upstream | OE Style |
| 2005 | Jaguar | XKR | Upstream | OE Style |
| 2004 | Jaguar | X-Type | Upstream | OE Style |
| 2004 | Jaguar | XK8 | Upstream | OE Style |
| 2004 | Jaguar | XKR | Upstream | OE Style |
| 2003 | Jaguar | X-Type | Upstream | OE Style |
| 2003 | Jaguar | XK8 | Upstream | OE Style |
| 2003 | Jaguar | XKR | Upstream | OE Style |
| 2002 | Jaguar | X-Type | 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.