Walker Products 350-34695 Narrow-Band Oxygen Sensor Direct Fit - 4-Wire

The Walker Products 350-34695 is a 4-wire, narrow-band, direct-fit oxygen sensor (O2 sensor) engineered as a premium original equipment replacement for a precise vehicle application. The oxygen sensor monitors the oxygen level in a vehicle's exhaust stream, ensuring optimal combustion, improved fuel efficiency, and reduced emissions.

Most Walker oxygen sensors feature a zirconium dioxide (zirconia) ceramic element stabilized with yttrium oxide and coated with a thin layer of platinum, enabling accurate voltage generation and rapid response to changes in oxygen concentration. This platinum coating prevents contamination and erosion of the electrode surfaces by combustion residue and particulates in the exhaust gases.

Key Features:

• 4-Wire Direct Fit Design — Plug-and-play installation with no wiring modifications required
• Narrow-Band Sensor — Delivers precise voltage signal to the ECU for accurate air-fuel ratio control
• Engineered and developed as an OEM replacement for a specific vehicle application, providing the relevant diagnostic system feedback as required by the ECU
• Genuine OE-quality and engineered precision to help improve fuel economy, reduce emissions, and optimize engine performance
• Manufactured by an Automotive ISO9001/TS 16949 certified company

Newer vehicles will store fault codes in the ECU related to the affected sensor and its systems. A failed sensor may cause the engine to run poorly, increase fuel consumption and exhaust emissions, or illuminate a malfunction indicator light (MIL/Check Engine Light).

⚠ California Proposition 65 Warning: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.