OE Quality
60-Day Returns

Walker 250-24374 Oxygen Sensor - Downstream Left or Downstream Right
Overview of Walker Products OE Oxygen Sensor 250-24374
The Walker Products OE Oxygen Sensor 250-24374 is designed specifically for Cadillac Catera models, ensuring precise emission control and optimal engine performance. 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 Cadillac Catera vehicles
- Threaded mounting with 18.0 mm thread diameter
- 21.18 inches wiring harness length with 4 wires of 20 gauge
- Radiused polygon male connector for reliable connection
- Overall length of 24.72 inches for proper fitment
Detailed Product Features and Specifications
This Walker oxygen sensor (part number 250-24374) is engineered with a 4-wire heated sensor design, which allows for faster sensor warm-up and improved fuel mixture readings. The wiring harness length of 21.18 inches and 20 gauge wire size provide durability and ease of routing within the engine bay. The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure and leak-free installation. The connector features a radiused polygon shape with a male gender, designed to match the factory wiring harness on Cadillac Catera models precisely.
Walker Products OE Brand Line Information
The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct replacement solution for emission control sensors on Cadillac Catera vehicles. The OE line emphasizes fit, form, and function to maintain vehicle performance and emissions compliance.
Common Applications and Issues Addressed
- Replacement for faulty or failing oxygen sensors on Cadillac Catera
- Helps resolve rough idling and poor fuel economy caused by sensor malfunction
- Addresses check engine light triggers related to oxygen sensor faults
- Improves emissions system performance and reduces exhaust pollutants
- Prevents drivability issues linked to incorrect air-fuel mixture readings
Installation Notes and Tips
When installing the Walker 250-24374 oxygen sensor, ensure the threaded mounting hole is clean and free of debris. Use anti-seize compound on the threads if recommended by the vehicle manufacturer to prevent sensor damage during future removal. Verify the connector matches the factory harness and secure the wiring harness to avoid contact with hot or moving engine components. Proper torque specifications should be followed to avoid sensor or exhaust system damage.
Quality Assurance and Warranty
Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. This ensures reliable operation and peace of mind when replacing emission control sensors on your Cadillac Catera.
| Brand | Walker |
|---|---|
| Part Number | 250-24374 |
| Position | Walker Products OE, Downstream Left |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 24.72 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 4 |
| Wiring Harness Length | 21.18 |
This part fits 4 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1998 | Cadillac | Catera | 3.0L | V6 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products OE |
| 1998 | Cadillac | Catera | 3.0L | V6 | GAS | Downstream Left | Downstream left oxygen sensor required.; Walker Products OE |
| 1997 | Cadillac | Catera | 3.0L | V6 | GAS | Downstream Right | Install downstream oxygen sensor on the right side.; Walker Products OE |
| 1997 | Cadillac | Catera | 3.0L | V6 | GAS | Downstream Left | Downstream left oxygen sensor required.; 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.