OE Quality
60-Day Returns

Walker 250-24456 Oxygen Sensor - Downstream Left or Downstream Right
Overview of Walker 250-24456 Oxygen Sensor for Nissan Sentra
The Walker 250-24456 oxygen sensor is designed specifically for Nissan Sentra models, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.
- Heated oxygen sensor for accurate emissions monitoring
- Specific fit for Nissan Sentra vehicles
- 28.27-inch wiring harness length for flexible installation
- 20-gauge wire with 4-wire configuration
- Threaded mounting with 18.0 mm thread diameter
- Radiused polygon male connector for reliable connection
- Overall length of 31.81 inches
Detailed Product Description
This Walker Products OE oxygen sensor (part number 250-24456) is engineered to meet the exact specifications required by Nissan Sentra models. The sensor is heated, which allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design includes a heater circuit and signal wires, ensuring accurate oxygen level readings. The wiring harness length of 28.27 inches provides ample reach for installation, while the 20-gauge wire ensures durability and signal integrity. The sensor mounts via a threaded connection with an 18.0 mm diameter, compatible with the vehicle’s exhaust system. The radiused polygon male connector ensures a secure and precise fit, minimizing the risk of disconnection or signal loss.
Walker Products OE Brand Line
The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM standards. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with factory-installed components. Choosing a Walker Products OE sensor helps maintain the integrity of your Nissan Sentra’s emission control system.
Common Applications and Issues Addressed
- Restores accurate air-fuel ratio readings for optimal engine performance
- Helps resolve check engine light triggers related to oxygen sensor faults
- Improves fuel economy by providing precise emissions data
- Reduces harmful exhaust emissions by ensuring proper combustion
- Prevents rough idling and engine hesitation caused by faulty sensors
Installation Notes and Tips
When installing the Walker 250-24456 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads to facilitate future removal but avoid contaminating the sensor tip. Connect the radiused polygon male connector securely to the vehicle’s wiring harness. Verify the wiring harness length of 28.27 inches is sufficient for your installation location. Follow all vehicle-specific torque specifications to avoid damage.
Quality Assurance and Warranty
Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. This part number 250-24456 undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.
| Brand | Walker |
| Part Number | 250-24456 |
| Position | Walker Products OE, Downstream Right |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 31.81 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 28.27 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2002 | Nissan | Sentra | XE | 1.8L | L4 | GAS | Downstream Right | Exc. CA Series; Excluye Serie CA; Downstream; Right; Walker Products OE |
| 2002 | Nissan | Sentra | GXE | 1.8L | L4 | GAS | Downstream Right | Exc. CA Series; Excluye Serie CA; Downstream; Right; Walker Products OE |
| 2002 | Nissan | Sentra | XE | 1.8L | L4 | GAS | Downstream Right | Exc. CA Series; Downstream; Right; Walker Products OE |
| 2002 | Nissan | Sentra | GXE | 1.8L | L4 | GAS | Downstream Right | Exc. CA Series; Downstream; Right; Walker Products OE |
| 2001 | Nissan | Sentra | XE | 1.8L | L4 | GAS | Downstream Left | Excl. CA Series, w/ Mid Year Emissions; Downstream; Left; Walker Products OE |
| 2001 | Nissan | Sentra | GXE | 1.8L | L4 | GAS | Downstream Left | Excl. CA Series, w/ Mid Year Emissions; Downstream; Left; Walker Products OE |
| 2001 | Nissan | Sentra | XE | 1.8L | L4 | GAS | Downstream Left | Exc.CA Series, w/ Mid Year Emissions; Downstream; Left; Walker Products OE |
| 2001 | Nissan | Sentra | GXE | 1.8L | L4 | GAS | Downstream Left | Exc.CA Series, w/ Mid Year Emissions; Downstream; Left; Walker Products OE |
* 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.