Walker 350-33058 Oxygen Sensor - Upstream

Walker 350-33058 Oxygen Sensor Overview

Walker Products 350-33058 is a heated oxygen sensor built as an OE-style replacement for specific upstream applications. It is designed for vehicles that rely on accurate exhaust feedback to manage fuel delivery, emissions, and engine performance.

This Walker Products Aftermarket sensor is a specific-fit, threaded oxygen sensor with a female radiused polygon connector and 3-wire configuration. It is a direct-fit option for select Land Rover Defender 90, Jeep Cherokee, Jeep Comanche, Jeep Wagoneer, and Dodge Monaco applications listed below.

Key Features

• Part number: 350-33058
• Heated oxygen sensor for upstream exhaust monitoring
• Specific fitment for listed vehicle applications
• Threaded mounting type with 18.0 mm thread diameter
• 3-wire design with 20-gauge wiring
• 8.39 in. wiring harness length and 11.93 in. overall length
• Female radiused polygon connector shape

Product Details

Walker Products 350-33058 is engineered for application-specific fitment and ECU feedback requirements. As an oxygen sensor, it helps the engine management system monitor exhaust oxygen content so the vehicle can adjust air-fuel control and maintain proper operation. The Walker Products Aftermarket line focuses on OE replacement coverage for engine management and oxygen/air-fuel sensor applications, including vehicles such as the Jeep Cherokee, Jeep Comanche, Jeep Wagoneer, and Land Rover Defender 90.

This part cross-references no listed alternate part numbers in the provided data. For search relevance, this oxygen sensor is commonly referenced as a Walker 350-33058 upstream oxygen sensor, Walker Products 350-33058 OE replacement, and a heated O2 sensor for select Jeep and Land Rover applications.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel control
• Higher exhaust emissions from a failing upstream sensor
• Fault codes stored in the ECU tied to sensor or related systems

Installation Notes

Install this sensor in the upstream position specified for the vehicle application. Before replacement, inspect the sensor, wiring harness, and connector for physical damage, since damaged wiring or connectors can shorten service life and affect signal quality. Confirm connector style, thread size, and harness routing against the original part before installation.

Fits 1994-1995 Land Rover Defender 90, upstream right; fits 1997 Land Rover Defender 90, upstream right; fits 1990 Dodge Monaco, upstream; fits 1987-1990 Jeep Cherokee, upstream; fits 1987-1990 Jeep Comanche, upstream; fits 1988-1990 Jeep Wagoneer, upstream.

Quality Assurance

Walker Products has produced engine management and oxygen/air-fuel sensors for OE replacement use across global vehicle applications since 1946. The company is ISO 9001/TS 16949 certified, and this part is manufactured to match the specified application and diagnostic feedback requirements of the ECU.