Walker 250-241341 Oxygen Sensor - Downstream

OE Base Downstream Oxygen Sensor

Walker OE Base Sensor 250-241341 is a heated narrow-band oxygen sensor built for the downstream position on select Honda Accord applications. It is engineered as an OE-style replacement that delivers the diagnostic feedback the ECU expects from the exhaust system.

For 2021-2022 Honda Accord models, this downstream oxygen sensor helps maintain accurate emissions monitoring and engine management performance. The 4-wire, 4-terminal design with an M18 x 1.5 thread size supports direct-fit service on the specified application.

Key Features

• Heated narrow-band oxygen sensor for downstream placement
• OE Base Sensor line for application-specific replacement fitment
• 4-wire, 4-terminal configuration
• M18 x 1.5 thread size
• Built for ECU feedback on emissions-related monitoring
• Fits 2021-2022 Honda Accord, downstream

Application Details

Walker Products designs this sensor for the exact vehicle position and system response required by the application. Part number 250-241341 is intended for the downstream location on the Honda Accord, where it supports exhaust monitoring after the catalytic converter. If the original sensor is failing, the vehicle may store fault codes, run poorly, increase fuel use, raise exhaust emissions, or illuminate the malfunction indicator light. Part number 250-241341 is also referenced for the same application as an OE-style replacement sensor.

What It Helps Address

• Stored oxygen sensor-related fault codes
• Illuminated malfunction indicator light
• Rough engine operation tied to exhaust feedback issues
• Increased fuel consumption from inaccurate sensor data
• Elevated exhaust emissions from a failing downstream sensor

Installation Notes and Tips

Confirm the vehicle is a 2021-2022 Honda Accord with downstream sensor placement before ordering. Inspect the sensor, wiring harness, and connector for physical damage before installation, since damaged components can shorten service life and affect signal quality. Verify thread size and connector match the original part before replacement.

Quality Assurance

Walker Products has produced engine management and oxygen/air-fuel sensors since 1946 and manufactures this OE Base Sensor as an application-specific replacement. The company is ISO 9001/TS 16949 certified, with manufacturing and catalog support focused on automotive service parts.