Walker 350-341093 Oxygen Sensor - Downstream or Downstream Right

OE Replacement Oxygen Sensor for BMW and Mini

Walker OE Replacement part number 350-341093 is a heated narrow-band oxygen sensor built for specific downstream applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring on select BMW and Mini models.

Walker Products has focused on engine management and oxygen/air-fuel sensors since 1946, and the OE Replacement line is built around application-specific fitment and sensor position. For shoppers searching for a downstream oxygen sensor for BMW M8, BMW X5, or Mini Cooper, 350-341093 is a direct-fit replacement option.

Key Features

• Heated narrow-band oxygen sensor for downstream use
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with spade terminals
• Threaded mounting with M18 x 1.5 thread size
• Oblong connector shape and male terminal gender
• Standard replacement grade for OE-style service
• Part number: 350-341093

Detailed Description

Walker 350-341093 is an OE Replacement oxygen sensor intended for downstream positions on select BMW and Mini vehicles. The sensor is heated and uses a narrow-band design, which allows the engine control unit to monitor exhaust oxygen content and maintain the correct air-fuel strategy after the catalytic converter. This makes it a practical choice for drivers and technicians replacing a failed downstream sensor on a BMW 228i Gran Coupe, BMW M5, BMW X2, BMW X5, BMW X7, BMW M8, BMW M8 Gran Coupe, BMW 220i, BMW X1, or Mini Cooper family application.

This part cross-references Bosch 17098 and Denso 234-9005 for the same application. Part number 350-341093 is built for specific fitment and position, helping ensure the connector, thread size, and sensor style match the vehicle requirements.

What It Is Used For

• Replacing a failed downstream oxygen sensor
• Restoring ECU feedback for exhaust monitoring
• Addressing check engine light concerns tied to oxygen sensor faults
• Correcting poor fuel economy caused by inaccurate sensor readings
• Helping resolve elevated exhaust emissions from a worn sensor

Installation Notes and Tips

Confirm the vehicle’s exact year, model, and downstream position before ordering. This sensor uses an M18 x 1.5 threaded mount, a 4-wire layout, and an oblong connector, so matching the original connector and harness routing is important. Inspect the sensor wiring, connector, and nearby exhaust components for heat damage or corrosion before installation. If the ECU has stored fault codes, clear them after the repair and verify that the system returns to normal operation.

Quality Assurance

Walker Products manufactures engine management sensors as OE replacement components for specific applications. The brand’s OE Replacement line is built around application-specific fitment and diagnostic feedback requirements for modern vehicle systems.

Compatible With: 2022-2025 BMW M8, downstream right; 2021-2025 BMW M8 Gran Coupe, downstream right; 2021-2024 BMW 228i Gran Coupe, downstream; 2022-2024 BMW 228i xDrive Gran Coupe, downstream; 2022-2024 BMW M235i xDrive Gran Coupe, downstream; 2021-2024 Mini Cooper, downstream; 2021-2024 Mini Cooper Clubman, downstream; 2021-2024 Mini Cooper Countryman, downstream; 2021-2023 BMW M5, downstream right; 2021-2023 BMW X2, downstream; 2022 BMW X1, downstream; 2020-2021 BMW 228i xDrive Gran Coupe, downstream; 2020-2021 BMW M235i xDrive Gran Coupe, downstream; 2020-2021 BMW X1, downstream; 2021 BMW X5, downstream right; 2019-2020 BMW 220i, downstream; 2018-2020 BMW M5, downstream right; 2020 BMW M8, downstream right; 2020 BMW M8 Gran Coupe, downstream right; 2019-2020 BMW X2, downstream; 2019-2020 BMW X5, downstream right; 2019-2020 BMW X7, downstream right; 2018 BMW 220i, downstream.