Walker 350-34260 Oxygen Sensor - Downstream or Upstream

Walker 350-34260 Oxygen Sensor Overview

Walker Products 350-34260 is a heated oxygen sensor built as a specific-fit replacement for select Ford Escort and Mercury Tracer applications. It is engineered to provide the ECU with the feedback needed for fuel control and emissions monitoring, making it a direct service part for downstream and upstream positions listed below.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for OE-style replacement use. The 350-34260 follows that approach with application-specific fitment, a threaded mounting design, a 4-wire heated sensor layout, and connector and harness dimensions matched to the vehicle application.

Key Features

• Part number: 350-34260
• Heated oxygen sensor for emissions and fuel-control feedback
• Specific fitment for listed vehicle applications
• 4-wire design with 22-gauge wiring
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 19.61
• Overall length: 23.15
• Radiused polygon connector shape with male connector gender

Detailed Description

Walker Products 350-34260 is an oxygen sensor for 1996 Ford Escort downstream bank 1 sensor 2 applications and 1996 Mercury Tracer upstream bank 1 sensor 1/front oxygen sensor positions. It is built for specific vehicle placement so the ECU receives the correct signal for air-fuel management and emissions diagnostics. If you are replacing a failed sensor on a 1996 Ford Escort or 1996 Mercury Tracer, this part number provides the fitment and connector style needed for the listed positions.

As part of the Walker Products Aftermarket line, this sensor is developed for engine management service work where OE-style replacement and application-specific feedback matter. The heated design helps the sensor reach operating temperature for normal closed-loop operation, while the threaded mount and matched harness dimensions support a direct replacement process on the confirmed applications.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation from inaccurate air-fuel correction
• Elevated exhaust emissions from a failing sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Before replacement, inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear. Confirm the vehicle position carefully: Fits 1996 Ford Escort, downstream bank 1 sensor 2, and Fits 1996 Mercury Tracer, upstream bank 1 sensor 1/front oxygen sensor. Verify connector shape, thread diameter, and harness length against the original sensor before installation.

For best results, clear diagnostic trouble codes after installation and confirm the repair with a scan tool and road test. Because oxygen sensor faults can also be influenced by wiring or connector damage, inspect the related circuit if the fault returns.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-34260 is manufactured as an application-specific replacement sensor for the listed Ford Escort and Mercury Tracer fitments.