Walker 350-341037 Oxygen Sensor - Downstream or Downstream Front

Overview of Walker Oxygen Sensor 350-341037

The Walker 350-341037 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Corolla, Highlander, Prius variants, RX series, and Sienna. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Lexus and Toyota models such as Corolla, Highlander, Prius, RX350, and Sienna
• 14.29-inch wiring harness length for flexible installation
• 18mm thread diameter for secure mounting
• Wire gauge measurement of 22 for reliable electrical conductivity
• Male connector for direct compatibility
• Overall length of 17.83 inches

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-341037) is engineered to meet the exact specifications of your vehicle’s emission control system. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings. The 4-wire design includes two wires for the heater circuit and two for the sensor signal, ensuring consistent performance. With a wiring harness length of 14.29 inches and an overall length of 17.83 inches, this sensor offers sufficient reach and fitment flexibility for installation in the exhaust system of compatible Lexus and Toyota vehicles.

The 18mm thread diameter allows for a secure and proper fit, while the 22-gauge wire ensures durability and reliable signal transmission. The male connector design matches factory specifications, simplifying replacement without the need for modifications.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct replacement solution for specific Lexus and Toyota models. The product line emphasizes precise fitment and reliable sensor performance to maintain vehicle emissions compliance and engine efficiency.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel economy
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by ensuring proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors
• Prevents failed emissions tests due to sensor malfunction

Installation Notes and Tips

Before installation, verify compatibility with your Lexus or Toyota model, including Corolla, Highlander, Prius (all variants), RX350, RX450h, and Sienna. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. The 18mm thread diameter requires a compatible oxygen sensor socket for removal and installation. Ensure the male connector is securely connected to the vehicle’s wiring harness to maintain proper sensor function.

Quality Assurance and Warranty

Walker oxygen sensors undergo rigorous testing to meet emission control standards and provide reliable operation. The 350-341037 sensor is manufactured to precise specifications for durability and performance. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary.