Walker Products 350-34297 4-Wire Titania Narrow-Band Oxygen Sensor OE Replacement

The Walker Products 350-34297 is a 4-wire, narrow-band Titania oxygen sensor engineered as a direct-fit, original equipment replacement O2 sensor. Unlike traditional zirconia-based sensors, this sensor uses a titania (titanium dioxide) element that changes electrical resistance — rather than generating a voltage — in response to oxygen levels in the exhaust stream, making it the correct replacement for vehicles originally equipped with Titania-type sensors.

Key Features:

• Titania sensing element — resistance-based technology for accurate air-fuel ratio monitoring on compatible applications
• 4-wire heated design — integrated heater circuit allows the sensor to reach operating temperature quickly, improving cold-start emissions performance and closed-loop fuel control response
• Narrow-band output — provides the switching-style voltage signal used by the engine control unit (ECU) to maintain the stoichiometric air-fuel ratio
• OE fit, form, and function — engineered to meet or exceed original equipment specifications for a reliable, plug-and-play installation
• Durable construction — stainless steel housing protects the sensing element against heat, vibration, and exhaust contaminants
• Helps restore proper fuel trim, improve fuel economy, and reduce harmful exhaust emissions

Walker Products has been a trusted supplier of fuel system components and engine sensors since 1946. The 350-34297 is part of Walker's premium O2 sensor program, recognized across the industry for exact OEM-equivalent performance.

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