Walker 350-34453 Oxygen Sensor - Downstream, Upstream Left or Upstream Right

Walker 350-34453 Oxygen Sensor Overview

Walker Products 350-34453 is a heated oxygen sensor built as a specific-fit OE replacement for select Toyota MR2 Spyder and Jaguar applications. It is engineered to deliver the ECU feedback needed for accurate fuel control, emissions monitoring, and fault-code diagnosis.

Walker Products Aftermarket focuses on application-specific engine management sensors, and this oxygen sensor follows that approach with the correct mounting style, connector design, and harness length for the listed vehicles.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit for the listed downstream and upstream positions
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector for vehicle-specific connection
• Wiring harness length: 32.99 in.; overall length: 36.54 in.
• Walker Products part number 350-34453

Detailed Description

Walker Products 350-34453 is designed for vehicles that rely on precise oxygen sensor feedback to manage air-fuel ratio and emissions performance. This heated oxygen sensor is a direct replacement for the specified fitments, including 2006 Toyota MR2 Spyder downstream, 2000-2005 Toyota MR2 Spyder downstream bank 1 sensor 2 on specific vehicle models, and Jaguar XJ12 and XJS upstream left or right applications from the listed years. If you are replacing a failed Toyota MR2 Spyder oxygen sensor or sourcing a Walker 350-34453 for Jaguar XJ12 or XJS service, this part is built around the original application requirements.

As an OE-style replacement, it is intended to restore the diagnostic signal the ECU expects from the sensor circuit. The part number 350-34453 is matched to the listed position and connector configuration so the sensor can be selected by fitment rather than by generic universal sizing.

What This Oxygen Sensor Helps Address

• Check engine light or malfunction indicator light related to oxygen sensor faults
• Poor engine performance caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate exhaust readings
• Higher exhaust emissions from a failing sensor circuit
• Stored ECU fault codes tied to the affected sensor or related systems

Installation Notes and Tips

Confirm the vehicle position before ordering, since this part is listed for downstream and upstream left/right locations depending on application. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation, and verify the threaded mounting point is clean and undamaged. For Toyota MR2 Spyder and Jaguar XJ12/XJS service, match the connector shape and wire count to the original sensor before replacement.

Quality Assurance

Walker Products manufactures engine management sensors as OE replacement parts for global vehicle applications and operates under Automotive ISO9001/TS 16949 certification. Since 1946, the brand has supplied oxygen and air-fuel sensors for vehicle repair and maintenance, and Walker Products 350-34453 follows that application-specific approach.

Fits 2006 Toyota MR2 Spyder, downstream. Fits 2000-2005 Toyota MR2 Spyder, downstream bank 1 sensor 2 on specific vehicle models. Fits 1995-1996 Jaguar XJ12, upstream right and upstream left. Fits 1995 Jaguar XJS, upstream right and upstream left.