Walker 250-241302 Oxygen Sensor - Downstream

OE Base Oxygen Sensor for Volvo Downstream Applications

Walker OE Base Sensor 250-241302 is a heated narrow-band oxygen sensor built for specific downstream applications. It is engineered as an OE-style replacement for vehicles that require accurate ECU feedback from the exhaust system, including Volvo S60, S90, V60, XC60, XC90, and V90 fitments.

Walker Products has focused on engine management and oxygen/air-fuel sensing since 1946, and the OE Base Sensor line is built around application-specific fitment and sensor positioning. Part number 250-241302 is designed for the correct downstream location and the proper diagnostic signal expected by the vehicle control system.

• Heated narrow-band oxygen sensor
• Specific fitment for downstream placement
• 4-wire design with 4 terminals
• Oblong female connector with male spade terminals
• M18 x 1.5 thread size and 22 mm wrench size
• OE Base Sensor line for application-specific replacement

Detailed Product Information

This Walker oxygen sensor is intended for downstream exhaust monitoring on select Volvo models, including 2025 Volvo S60, S90, V60, XC60, and XC90 with code GH08 or GH17, plus 2022-2024 Volvo S60, S90, V60, XC60, and XC90 with variant code GH08 or GH17. It also fits 2021 Volvo V90 with code GH05 and 2018-2019 Volvo XC60 with code CC02 or GH05. The 250-241302 part number should be matched to the vehicle code and sensor position before installation.

As a narrow-band oxygen sensor, this unit supports exhaust feedback used by the ECU to monitor emissions-related performance. A failing downstream sensor can contribute to poor engine operation, higher fuel use, increased exhaust emissions, or a malfunction indicator light. Checking the sensor, connector, and wiring harness for damage is important when diagnosing the system.

What This Sensor Helps Address

• Check engine or malfunction indicator light related to downstream oxygen sensor faults
• Incorrect exhaust feedback to the ECU
• Increased fuel consumption caused by sensor degradation
• Elevated exhaust emissions from a worn sensor
• Poor drivability tied to emissions-system fault codes

Installation Notes and Tips

Confirm the vehicle’s code and downstream sensor location before ordering. For Volvo S60, S90, V60, XC60, XC90, and V90 applications, verify the OE Base Sensor requirement and inspect the connector, harness, and exhaust bung threads for damage before installation. The M18 x 1.5 thread and 22 mm wrench size should be matched to the vehicle’s exhaust port.

Part number 250-241302 is an OE-style replacement for specific downstream applications, and it cross-references Walker Products 250-241302 for the same application.

Quality Assurance

Walker Products manufactures engine management and oxygen/air-fuel sensors as application-specific OE replacement parts and operates as an ISO 9001/TS 16949 certified company. The OE Base Sensor line is built to provide the diagnostic feedback required by the ECU for the listed Volvo applications.