Walker 350-34305 Oxygen Sensor - Upstream

Walker 350-34305 Oxygen Sensor for Ferrari

Walker Products 350-34305 is a specific-fit heated oxygen sensor engineered as an OE-style replacement for select Ferrari applications. It is built for upstream placement and uses a 4-wire, threaded design with a female radiused polygon connector for direct-fit service on the listed vehicles.

Key Features

• Heated oxygen sensor for upstream exhaust monitoring
• Specific fitment for listed Ferrari applications
• 4-wire design with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 21.18 in.; overall length: 24.72 in.
• Female connector with radiused polygon shape

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors built for original equipment replacement needs. Part number 350-34305 is matched to the application and sensor position so the ECU receives the expected feedback from the upstream sensor circuit. For Ferrari F355 GTS, Ferrari F355 Spider, Ferrari F355 Berlinetta, and Ferrari 456 GT applications, this sensor supports accurate exhaust feedback at the upstream location. Walker 350-34305 is a direct-fit oxygen sensor for vehicles that require a heated, threaded sensor with the specified connector and harness configuration.

This part cross-references no listed aftermarket part numbers for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from a failing upstream sensor
• Higher exhaust emissions from inaccurate air-fuel monitoring
• Fault codes stored in the ECU for sensor-related issues

Installation Notes

Fits 1995 Ferrari 456 GT, upstream. Fits 1995-1996 Ferrari F355 Berlinetta, upstream. Fits 1995-1997 Ferrari F355 GTS, upstream. Fits 1996-1997 Ferrari F355 Spider, upstream. Verify connector shape, thread diameter, and harness routing before installation. Inspect the sensor wiring harness and connector for physical damage, since damaged components can shorten sensor life and affect ECU feedback.

Quality Assurance

Walker Products states that its engine management sensors are developed as OE replacement parts and manufactured under Automotive ISO 9001/TS 16949 quality systems. Part number 350-34305 is built for the specified application and position to support proper diagnostic feedback on the listed Ferrari models.