Walker 350-34082 Oxygen Sensor - Downstream Left or Downstream Right

Walker Oxygen Sensor for Cadillac Catera

Walker Products 350-34082 is a heated oxygen sensor built as a specific-fit OE replacement for select Cadillac Catera applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring on downstream positions.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fitment for the listed Cadillac Catera applications
• 4-wire design with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 12.32 in.; overall length: 15.87 in.

Product Details

Walker Products Aftermarket 350-34082 is part of the Walker Products engine management and oxygen/air-fuel sensor line, developed as an OE-style replacement for worldwide vehicle coverage. For 1999-2001 Cadillac Catera models, this sensor is listed for downstream left and downstream right positions, making it a direct-match option for the specified exhaust location. Walker Products 350-34082 is intended to restore accurate exhaust feedback to the ECU so the vehicle can manage fuel delivery and emissions monitoring correctly.

This part cross-references no listed aftermarket part numbers in the provided data.

What It Helps Address

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

Installation Notes

Verify the downstream left or downstream right position before installation on the Cadillac Catera. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten service life and affect signal quality. Confirm the threaded mounting location and connector shape match the vehicle before replacement.

Quality Assurance

Walker Products manufactures engine management sensors as OE replacement components and operates as an ISO 9001/TS 16949 certified company. Since 1946, the brand has supplied oxygen sensors and fuel system components for automotive applications.