Walker 250-54046 Oxygen Sensor - Upstream

Walker Products OE Oxygen Sensor for Honda and Acura

Walker Products OE Part Number 250-54046 is a heated upstream oxygen sensor built for specific vehicle applications. It is engineered as an OE-style replacement that delivers the diagnostic feedback the ECU expects, helping maintain proper air-fuel control on supported Honda and Acura models.

For drivers searching for an upstream oxygen sensor for 2003-2010 Honda Element, 2005-2006 Honda CR-V, or 2005-2006 Acura RSX, this Walker Products OE sensor is matched to the listed fitment and mounting position. The 250-54046 part number is also a direct reference for buyers comparing replacement oxygen sensors by application.

Key Features

• Heated oxygen sensor for upstream placement
• Specific-fit design for the listed Honda and Acura applications
• 4-wire configuration with 20-gauge wiring
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific fitment
• Wiring harness length: 12.32
• Overall length: 15.87

Walker Products OE Line Details

Walker Products OE focuses on engine management and oxygen/air-fuel sensors built to match original equipment requirements for fitment position and ECU feedback. The 250-54046 follows that approach with a vehicle-specific design intended for the upstream sensor location on the listed applications.

Detailed Description

This oxygen sensor is designed for vehicles that rely on accurate upstream exhaust feedback to manage fuel delivery and emissions control. On the supported Honda Element, Honda CR-V, and Acura RSX applications, the sensor helps the ECU monitor exhaust conditions and adjust engine operation accordingly. The 250-54046 is a practical replacement choice when the original sensor has triggered fault codes, caused rough running, increased fuel use, or illuminated the malfunction indicator light.

Fits 2003-2010 Honda Element, upstream. Fits 2005-2006 Honda CR-V, upstream. Fits 2005-2006 Acura RSX, upstream. This part cross-references no listed interchange numbers in the provided data.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Rough engine operation caused by incorrect exhaust feedback
• Higher fuel consumption from inaccurate air-fuel control
• Elevated exhaust emissions from a failing sensor
• Stored ECU fault codes tied to the sensor circuit or related systems

Installation Notes and Tips

Confirm the vehicle year, make, model, and upstream position before ordering. Inspect the sensor wiring harness and connector for damage before installation, since physical wear can shorten sensor life and affect operation. Verify the threaded mounting location and connector style match the original part on the vehicle.

Quality Assurance

Walker Products states that its engine management sensors are manufactured under Automotive ISO9001/TS 16949 certification standards. The brand has supplied engine management and fuel system components since 1946, with a focus on application-specific OE replacement parts.