HomeEmission Control > SensorsWalker 350-341007 Oxygen Sensor - Downstream Rear
Part #: 350-341007

Walker 350-341007 Oxygen Sensor - Downstream Rear

Walker Products Aftermarket, Downstream Rear
⚙️ 29 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products Aftermarket, Downstream Rear
🚗Fitment: Toyota, Sienna
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Reliable Oxygen Sensor for Toyota Sienna Emission Control

The Walker 350-341007 oxygen sensor is designed to maintain optimal engine performance and emissions control for your Toyota Sienna. This sensor plays a critical role in monitoring exhaust gases to ensure efficient fuel combustion and compliance with emission standards.

  • Compatible with Toyota Sienna models
  • Part number 350-341007 for precise identification
  • Category: Emission Control > Sensors
  • Type: Oxygen Sensor for accurate exhaust gas measurement
  • Manufactured by Walker, a trusted brand in automotive parts

Walker Products Aftermarket Line Overview

The Walker Products Aftermarket line offers a range of emission control components designed to meet or exceed OEM specifications. This product line focuses on delivering reliable and durable sensors that support vehicle emission systems, helping maintain engine efficiency and regulatory compliance. The 350-341007 oxygen sensor is part of this line, ensuring compatibility and performance for Toyota Sienna vehicles.

Product Details and Functionality

The Walker 350-341007 oxygen sensor monitors the oxygen levels in the exhaust gases of your Toyota Sienna. By providing real-time data to the engine control unit (ECU), it helps regulate the air-fuel mixture for optimal combustion. This sensor contributes to reducing harmful emissions and improving fuel economy. Its precise fitment for Toyota Sienna models ensures accurate readings and reliable operation within the vehicle’s emission control system.

Common Issues Addressed by This Oxygen Sensor

  • Engine performance problems due to incorrect air-fuel mixture
  • Increased emissions leading to failed emissions tests
  • Poor fuel economy caused by inefficient combustion
  • Check engine light triggered by faulty oxygen sensor readings
  • Rough idling or hesitation during acceleration

Installation Notes and Tips

When replacing the oxygen sensor on your Toyota Sienna, ensure the engine is cool to avoid burns. Use the correct tools to remove the old sensor and install the Walker 350-341007 sensor securely. Verify the sensor’s electrical connections are properly seated to maintain accurate signal transmission to the ECU. It is recommended to follow the vehicle manufacturer’s guidelines for sensor replacement intervals and procedures.

Quality Assurance and Warranty

Walker oxygen sensors are manufactured to meet industry standards for durability and performance. The 350-341007 part undergoes rigorous quality control to ensure reliable operation within the emission control system of Toyota Sienna vehicles. Please refer to Walker’s warranty policy for specific coverage details related to this oxygen sensor.

This part fits 29 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2020ToyotaSiennaXLE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2020ToyotaSiennaXLE Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2020ToyotaSiennaSE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2020ToyotaSiennaSE Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2020ToyotaSiennaLimited3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2020ToyotaSiennaLimited Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2020ToyotaSiennaLE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2020ToyotaSiennaL3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2019ToyotaSiennaXLE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2019ToyotaSiennaXLE Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2019ToyotaSiennaSE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2019ToyotaSiennaSE Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2019ToyotaSiennaLimited3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2019ToyotaSiennaLimited Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2019ToyotaSiennaLE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2019ToyotaSiennaL3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2018ToyotaSiennaXLE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2018ToyotaSiennaXLE Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2018ToyotaSiennaSE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2018ToyotaSiennaSE Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2018ToyotaSiennaLimited3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2018ToyotaSiennaLimited Premium3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2018ToyotaSiennaLE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2018ToyotaSiennaL3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2017ToyotaSiennaXLE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2017ToyotaSiennaSE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2017ToyotaSiennaLimited3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2017ToyotaSiennaLE3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
2017ToyotaSiennaL3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.