Walker 350-33036 Oxygen Sensor - Upstream

Walker 350-33036 Oxygen Sensor for Volvo

Walker Products 350-33036 is a heated oxygen sensor built as a specific-fit OE replacement for select Volvo applications. It is engineered to deliver the correct feedback to the ECU, helping maintain proper air-fuel control in upstream sensor locations.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for exact application fitment. For Volvo 240, 740, 760, 780, 940, and 960 models, this part number is matched to the required mounting position and connector style for the listed vehicles.

Key Features

• Heated oxygen sensor for upstream placement
• Specific-fit design for listed Volvo applications
• 3-wire configuration with 20-gauge wiring
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon connector shape with male and female connector ends
• Wiring harness length: 63.31
• Overall length: 66.85
• Walker Products part number 350-33036

Detailed Description

This Walker oxygen sensor is designed for upstream use where the ECU relies on accurate exhaust feedback to manage fuel delivery and emissions control. It is a direct-fit replacement for select Volvo 240, 740, 760, 780, 940, and 960 models, including applications such as Bank 1 Sensor 1 and front oxygen sensor positions listed in the fitment data. If your Volvo shows a fault code, poor fuel economy, rough running, or an illuminated MIL, a worn sensor is one of the components to inspect.

Walker Products 350-33036 is part of the Walker Products Aftermarket engine management line, which is built around application-specific sensor coverage for OE-style replacement needs. This part cross-references Walker Products Aftermarket 350-33036 for the same application.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Rich or lean fuel mixture concerns
• Reduced fuel economy from inaccurate exhaust feedback
• Higher exhaust emissions during inspection
• Poor engine operation caused by a failing sensor signal

Installation Notes and Tips

Verify the vehicle’s emissions configuration before ordering, especially on Volvo 240 applications where California and non-California fitment differs. Confirm the upstream location, connector shape, wire count, and thread size before installation. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life and affect ECU feedback.

• Fits 1992-1994 Volvo 960, upstream
• Fits 1993 Volvo 240, upstream
• Fits 1990-1992 Volvo 240, upstream
• Fits 1989-1992 Volvo 740, upstream
• Fits 1991 Volvo 940, upstream
• Fits 1987-1990 Volvo 760, upstream
• Fits 1987-1990 Volvo 780, upstream

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement parts for specific applications and fitment positions. The company states that its operations are supported by Automotive ISO9001/TS 16949 certification, with product development focused on accurate ECU feedback and application-specific coverage.