Walker 250-21062 Oxygen Sensor - Upstream

Walker OE Oxygen Sensor for Dodge Colt

Walker Products OE 250-21062 is a specific-fit, non-heated oxygen sensor engineered for the upstream Bank 1 Sensor 1 position. It is built for 1989-1991 Dodge Colt applications without California emissions certification, where accurate exhaust feedback is needed for proper ECU operation.

Key Features

• Specific-fit oxygen sensor for the upstream position
• Non-heated design with 1-wire construction
• Male connector with radiused polygon connector shape
• 18.0 mm thread diameter and threaded mounting type
• Wiring harness length: 23.15 in.; overall length: 26.69 in.
• Walker Products OE line replacement for engine management sensor applications

Fitment Details

Compatible with 1989-1991 Dodge Colt, upstream Bank 1 Sensor 1, for non-California emissions vehicles. Fits 1989-1991 Dodge Colt, upstream, and is not suitable for California emissions-certified vehicles. Walker Products OE 250-21062 is also listed for vehicles without California and Federal emissions in the upstream position.

What This Sensor Helps Address

• Check engine light related to upstream oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation from inaccurate air-fuel correction
• Higher exhaust emissions from a failing sensor signal
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes

Confirm the vehicle is a non-California emissions Dodge Colt before ordering. Inspect the sensor wiring harness and connector for damage before installation, since physical wear can shorten sensor life and affect signal quality. Verify the threaded mounting location, connector style, and upstream Bank 1 Sensor 1 position match the original part.

Quality Assurance

Walker Products OE sensors are developed as original-equipment replacement parts for specific vehicle applications and fitment positions. The brand’s engine management sensor line is backed by ISO 9001/TS 16949 manufacturing practices and application-specific cataloging for accurate replacement selection. Part number 250-21062 is built to provide the diagnostic feedback expected by the ECU in the listed application.