Walker 350-34129 Oxygen Sensor - Downstream

Walker 350-34129 Oxygen Sensor for Honda CR-V

Walker Products 350-34129 is a heated oxygen sensor built as a specific-fit OE-style replacement for select 2007-2009 Honda CR-V applications. It is engineered to provide the ECU with the feedback needed for accurate fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fitment for the correct vehicle application and mounting position
• 4-wire design with female connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 18.23 in.; overall length: 21.77 in.
• Radiused polygon connector shape for application-specific connection

Detailed Description

Walker Products Aftermarket 350-34129 is an emission control sensor designed for select Honda CR-V models with downstream bank 1 sensor 2 placement. This oxygen sensor helps the engine management system monitor exhaust conditions so the ECU can adjust air-fuel strategy and track catalyst-related performance. For 2007-2009 Honda CR-V owners, this part number 350-34129 provides a direct-fit replacement built around the specified position and connector style.

Walker Products has supplied engine management and oxygen/air-fuel sensors since 1946, with manufacturing focused on application-specific fitment and diagnostic feedback requirements. This product line is aimed at OE replacement needs across a wide range of vehicles, including the Honda CR-V downstream sensor location listed here.

What It Helps Address

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

Installation Notes and Tips

Fits 2007-2009 Honda CR-V, downstream bank 1 sensor 2. Confirm the connector shape, wire count, and threaded mounting location before installation. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten service life and affect signal quality. This part number 350-34129 is a specific-fit sensor, so matching the exact position is important for proper ECU feedback.

Quality Assurance

Walker Products is an Automotive ISO 9001/TS 16949 certified company with a long history in engine management and fuel system components. The Walker Products Aftermarket line is built around application-specific replacement parts for modern diagnostic systems.