Walker 250-25121 Oxygen Sensor - Upstream

Overview of Walker 250-25121 Oxygen Sensor for Dodge and Fiat

The Walker 250-25121 oxygen sensor is designed specifically for select Dodge and Fiat models, including the 124 Spider, 500, and Dart. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Dodge 124 Spider, Fiat 500, and Dodge Dart
• 21.25-inch wiring harness length for precise installation
• Five-wire configuration with 20 gauge wire for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 25.59 inches for proper fitment

Detailed Product Description and Attributes

This Walker oxygen sensor (part number 250-25121) features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor includes a 21.25-inch wiring harness with five 20-gauge wires, ensuring stable electrical signals and compatibility with the vehicle’s engine control unit. The radiused polygon male connector provides a secure and precise fit, minimizing the risk of disconnection or signal loss. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system of compatible Dodge and Fiat vehicles.

Walker Products OE Brand Line

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. This oxygen sensor is part of the Walker Products OE series, ensuring it matches the fit, form, and function required by Dodge and Fiat vehicles. The OE line is engineered to provide reliable emissions control components that integrate seamlessly with factory systems.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensors
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate exhaust gas readings
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker 250-25121 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the radiused polygon male connector aligns properly with the vehicle harness to ensure a secure connection. Follow manufacturer torque specifications to avoid over-tightening. This sensor is designed for specific fitment on Dodge 124 Spider, Fiat 500, and Dodge Dart models, so confirm compatibility before installation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. While specific warranty details for part number 250-25121 may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to product documentation or the vehicle service provider for exact warranty terms.