Walker 250-21000 Oxygen Sensor - Upstream

Overview of Walker Products OE Oxygen Sensor 250-21000

The Walker Products OE 250-21000 oxygen sensor is designed for precise emission control in various vehicles including Chevrolet, Mercedes-Benz, and Nissan models. This universal, non-heated oxygen sensor offers reliable performance with a threaded mounting type and specific wiring attributes tailored for accurate sensor operation.

• Universal fit oxygen sensor compatible with Chevrolet 720, S10 Blazer, Pickup, Mercedes-Benz 380SE, 380SEL, 380SL, 380SLC, 500SEC, 500SEL, and Nissan Sentra
• Non-heated sensor type with a single wire for straightforward installation
• Threaded mounting with an 18.0 mm thread diameter for secure attachment
• Wiring harness length of 5.83 inches and overall length of 9.37 inches for flexible placement
• 20 gauge wire measurement ensuring durability and signal integrity

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality emission control components. This oxygen sensor, part number 250-21000, reflects the brand line’s commitment to meeting or exceeding OEM specifications, ensuring compatibility and performance for a range of vehicle makes and models. The product line emphasizes precise fitment and reliable sensor operation to support emission system efficiency.

Product Description and Attributes

This oxygen sensor features a non-heated sensor type, which is suitable for vehicles equipped with external heating elements or where a heated sensor is not required. The single-wire design simplifies wiring connections, while the 18.0 mm threaded mounting ensures a secure fit in the exhaust system. The wiring harness length of 5.83 inches and overall length of 9.37 inches provide adequate reach and flexibility during installation. The 20 gauge wire measurement supports consistent electrical performance, contributing to accurate oxygen level readings.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for Chevrolet S10 Blazer and Pickup models
• Supports emission control systems in Mercedes-Benz 380SE, 380SEL, 380SL, 380SLC, 500SEC, and 500SEL vehicles
• Assists in resolving engine performance issues in Nissan Sentra models
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency and reduces harmful emissions

Installation Notes and Tips

• Ensure the threaded mounting hole matches the 18.0 mm thread diameter for proper fit
• Verify wiring harness length of 5.83 inches is sufficient for your vehicle’s sensor location
• Use appropriate tools to avoid damaging the sensor during installation
• Confirm the sensor type (non-heated) is compatible with your vehicle’s emission system
• Follow vehicle-specific service manual instructions for sensor replacement

Quality Assurance and Warranty

The Walker Products OE oxygen sensor 250-21000 is manufactured to meet stringent quality standards for emission control components. While specific warranty details are not provided here, Walker Products OE parts typically adhere to OEM quality requirements, ensuring dependable performance and durability in compatible Chevrolet, Mercedes-Benz, and Nissan vehicles.