Walker 250-21030 Oxygen Sensor - Upstream

Overview of Walker 250-21030 Oxygen Sensor for Saturn Vehicles

The Walker 250-21030 oxygen sensor is designed specifically for Saturn SC2, SL2, and SW2 models. This non-heated sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fitment and reliable emission control performance.

• Wiring harness length: 3.07 inches
• Wire gauge measurement: 20 gauge
• Sensor type: Non heated oxygen sensor
• Specific fit for Saturn SC2, SL2, SW2
• Connector shape: Radiused polygon, male gender
• Thread diameter: 14.0 mm
• Overall length: 6.61 inches
• Mounting type: Threaded
• Single wire configuration

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-21030 oxygen sensor is part of this line, providing a direct replacement solution engineered for compatibility and durability in Saturn vehicles. This ensures consistent emission control and sensor performance aligned with original manufacturer standards.

Product Description and Technical Specifications

This oxygen sensor is a non-heated type, which means it relies on exhaust heat to reach operating temperature. It features a 20 gauge single wire with a 3.07-inch wiring harness length, designed to fit the specific electrical and mechanical requirements of Saturn SC2, SL2, and SW2 models. The sensor’s radiused polygon male connector and 14.0 mm threaded mounting provide secure installation and reliable signal transmission. With an overall length of 6.61 inches, it fits precisely in the designated sensor port without modification.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for Saturn SC2, SL2, SW2 engines
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing accurate exhaust gas readings
• Reduces harmful emissions by ensuring correct sensor feedback
• Prevents drivability issues caused by faulty oxygen sensors

Installation Notes and Tips

When installing the Walker 250-21030 oxygen sensor, ensure the engine is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded port. Confirm the connector matches the radiused polygon male design for proper electrical connection. Thread the sensor carefully to prevent cross-threading and torque to manufacturer specifications. Verify wiring harness length and routing to prevent strain or interference.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. While specific warranty details for part number 250-21030 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Saturn SC2, SL2, and SW2 vehicles.