Walker 350-34456 Oxygen Sensor - Downstream Left or Downstream Right

Walker 350-34456 Oxygen Sensor for Cadillac Catera

Walker Products 350-34456 is a specific-fit heated oxygen sensor engineered as an OE-style replacement for select Cadillac Catera applications. It is built for downstream left and downstream right positions on 1997-1998 Cadillac Catera models, helping the ECU receive the exhaust feedback it expects.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for application-specific fitment. The 350-34456 follows that approach with a threaded, 4-wire heated design and a connector layout matched to the vehicle application.

Key Features

• Part number: 350-34456
• Specific-fit oxygen sensor for select Cadillac Catera models
• Heated sensor design for faster operating response
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 21.18
• Overall length: 24.72

Detailed Description

This Walker oxygen sensor is built for 1997-1998 Cadillac Catera downstream applications, including downstream left and downstream right positions. The sensor is designed to deliver the diagnostic feedback required by the ECU, which is important for maintaining proper fuel control and emissions monitoring. If the original sensor has aged or failed, the vehicle may store fault codes and show drivability or emissions-related symptoms. The 350-34456 is a direct-fit replacement for the specified positions and is intended to match the vehicle’s connector and threaded mounting requirements.

This part number, 350-34456, is a practical choice when servicing a Cadillac Catera oxygen sensor circuit and replacing a worn downstream sensor on the right or left side. Walker Products has supplied engine management components since 1946, and this sensor reflects that application-specific approach.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation linked to sensor degradation
• Elevated exhaust emissions from a failing oxygen sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Verify the vehicle position before ordering: this sensor is listed for 1997-1998 Cadillac Catera downstream left and downstream right applications. Inspect the sensor wiring harness and connector for damage before installation, since damaged wiring can shorten sensor life and affect operation. Confirm the threaded mounting and connector style match the original part before replacement.

Fits 1997-1998 Cadillac Catera, downstream left. Fits 1997-1998 Cadillac Catera, downstream right.

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement parts for specific applications and supports them through ISO9001/TS 16949-certified manufacturing processes.