OE Quality
60-Day Returns

Denso 234-4266 Oxygen Sensor - Downstream, Downstream Left or Downstream Right
Overview of the Denso OE Style Oxygen Sensor 234-4266
The Denso OE Style Oxygen Sensor 234-4266 is designed specifically for Land Rover vehicles including the LR3, Range Rover, and Range Rover Sport. This heated oxygen sensor features a threaded mounting type and a 16.61-inch wiring harness, ensuring precise fitment and reliable performance.
- Heated sensor type for faster activation and accurate readings
- Specific fitment for Land Rover LR3, Range Rover, and Range Rover Sport
- Threaded mounting with 0.708-inch thread diameter for secure installation
- 16.61-inch wiring harness length with 4 wires and male connector
- Part number 234-4266 for exact replacement compatibility
Detailed Product Description
The Denso OE Style oxygen sensor 234-4266 is engineered to meet the exact specifications of the original equipment for Land Rover models such as the LR3, Range Rover, and Range Rover Sport. This sensor uses a heated element to quickly reach operating temperature, improving fuel efficiency and reducing emissions. The 4-wire design with a male connector ensures proper electrical connection and communication with the vehicle’s engine control unit. The threaded mounting type with a 0.708-inch diameter allows for straightforward installation and a secure fit.
The OE Style product line from Denso focuses on delivering parts that match the original equipment in form, fit, and function. This ensures that the 234-4266 oxygen sensor integrates seamlessly with your Land Rover’s emission control system, maintaining optimal engine performance and compliance with emission standards.
Common Applications and Issues Addressed
- Restores accurate oxygen level readings for proper air-fuel mixture
- Helps resolve rough idling and engine hesitation
- Reduces increased fuel consumption caused by faulty sensors
- Prevents check engine light related to oxygen sensor faults
- Supports emission control system to meet regulatory requirements
Installation Notes and Tips
- Ensure vehicle compatibility with Land Rover LR3, Range Rover, or Range Rover Sport before installation
- Use appropriate tools for threaded sensor removal and installation to avoid damage
- Check wiring harness length (16.61 inches) and connector type (male) for proper fit
- Follow torque specifications for the 0.708-inch thread diameter to secure sensor
- Verify sensor operation after installation by monitoring engine performance and emissions
Quality Assurance and Warranty
Denso’s OE Style oxygen sensor 234-4266 is manufactured to meet strict quality standards, ensuring durability and reliable performance in emission control applications. While specific warranty details may vary, Denso parts typically come with a limited warranty covering defects in materials and workmanship. Using this sensor helps maintain your Land Rover’s emission system integrity and engine efficiency.
| Brand | Denso |
|---|---|
| Part Number | 234-4266 |
| Position | OE Style, 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 | 16.61 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2009 | Land Rover | Range Rover | Downstream | Exc. North American Vehicle; OE Style |
| 2008 | Land Rover | Range Rover | Downstream | Exc. North American Vehicle; OE Style |
| 2007 | Land Rover | Range Rover | Downstream | Exc. North American Vehicle; OE Style |
| 2006 | Land Rover | LR3 | Downstream Left | OE Style |
| 2006 | Land Rover | Range Rover | Downstream | OE Style |
| 2006 | Land Rover | Range Rover Sport | Downstream Right | OE Style |
| 2006 | Land Rover | Range Rover Sport | Downstream Left | OE Style |
| 2005 | Land Rover | LR3 | Downstream Left | 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.