Walker Products 350-34521 Oxygen Sensor 4-Wire Direct Fit Narrow-Band

The Walker Products 350-34521 is a direct-fit oxygen sensor engineered to monitor exhaust stream oxygen levels and optimize engine performance. This 4-wire narrow-band O2 sensor delivers precise voltage signals to the vehicle's Engine Control Unit (ECU), enabling real-time air-fuel mixture adjustments for improved fuel economy and reduced emissions.

Key Features:

• 4-wire narrow-band design for accurate oxygen measurement
• Direct-fit configuration ensures precise OEM fit, form, and function
• Zirconium dioxide ceramic element with platinum coating for reliable voltage generation
• Engineered and tested to meet or exceed OEM specifications
• Quality inspected before packaging to ensure reliable performance
• Helps optimize combustion efficiency and reduce harmful emissions

Walker Products has manufactured fuel system components and engine management devices since 1946, delivering over 20,000 products known throughout the automotive industry for exceptional quality and precision engineering. Each oxygen sensor undergoes rigorous quality control testing to ensure dependable performance mile after mile.

California Prop 65 Warning: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.