Walker 250-21028 Oxygen Sensor - Upstream

Overview of Walker Products OE Oxygen Sensor 250-21028

The Walker Products OE Oxygen Sensor 250-21028 is designed for specific vehicle applications including Chevrolet, GMC, Isuzu, Oldsmobile, Pontiac, and Saturn models. This non-heated oxygen sensor provides precise emissions control by monitoring exhaust gases to optimize engine performance and reduce harmful emissions.

• Wiring harness length: 13.31 inches for flexible installation
• Wire gauge measurement: 20 gauge for reliable signal transmission
• Non-heated sensor type for specific engine configurations
• Single wire quantity with a radiused polygon female connector
• Thread diameter of 18.0 mm with threaded mounting type
• Overall length of 16.85 inches for proper fitment

Detailed Product Description

This oxygen sensor, part number 250-21028, is engineered to meet the exact specifications required by select Chevrolet, GMC, Isuzu, Oldsmobile, Pontiac, and Saturn vehicles. The sensor’s non-heated design suits applications where heated sensors are not necessary, ensuring compatibility with the vehicle’s emission system. Featuring a 20 gauge wire and a 13.31-inch wiring harness, it allows for straightforward connection and installation. The radiused polygon female connector and threaded mounting type with an 18.0 mm thread diameter provide secure and precise attachment to the exhaust system. The overall length of 16.85 inches supports proper positioning within the exhaust stream for accurate oxygen level readings.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor from the Walker Products OE series is manufactured to provide reliable performance and durability, ensuring it integrates seamlessly with the vehicle’s emission control system. The OE line emphasizes fitment accuracy and component quality, making it suitable for professional repairs and maintenance.

Common Applications and Issues Addressed

• Compatible with Chevrolet Alero, Cavalier, Grand Am, Malibu, Sunfire
• Compatible with GMC S10, Sonoma
• Compatible with Isuzu Hombre
• Compatible with Oldsmobile and Pontiac SL, SL1, SL2, SC1, SC2, SW1, SW2 models
• Compatible with Saturn SL, SL1, SL2 models

• Helps resolve poor fuel economy caused by incorrect air-fuel mixture
• Addresses rough engine idle and hesitation issues
• Reduces emissions by providing accurate oxygen level data
• Prevents check engine light triggers related to oxygen sensor faults
• Supports proper catalytic converter function

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old oxygen sensor carefully using the appropriate oxygen sensor socket. Verify the thread size and connector type match the replacement sensor. Apply anti-seize compound to the threads if recommended by the vehicle manufacturer. Connect the wiring harness securely to the radiused polygon female connector. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

The Walker Products OE oxygen sensor 250-21028 is manufactured to meet stringent quality standards for emission control components. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. For warranty information, refer to the product documentation or contact the manufacturer directly.