HomeEmission Control > SensorsWalker 350-34167 Oxygen Sensor - Downstream
Part #: 350-34167

Walker 350-34167 Oxygen Sensor - Downstream

Walker Products Aftermarket, Downstream
10 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products Aftermarket, Downstream
Fitment: Lexus, IS300
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34167 Oxygen Sensor for Lexus IS300

The Walker 350-34167 oxygen sensor is designed specifically for the Lexus IS300, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

  • Heated oxygen sensor with 4 wires for accurate readings
  • Specific fitment for Lexus IS300 models
  • Threaded mounting with 18.0 mm thread diameter
  • 25.31 inches wiring harness length and 28.86 inches overall length
  • 20 gauge wire measurement for durability and signal integrity
  • Radiused polygon male connector for reliable connection

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34167) is engineered to meet the exact specifications required by the Lexus IS300. The sensor’s heated design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. With a 4-wire configuration and 20 gauge wiring, it provides stable and accurate oxygen level readings to the engine control unit. The radiused polygon male connector ensures a secure and precise fit, while the threaded mounting type with an 18.0 mm diameter allows for straightforward installation. The wiring harness length of 25.31 inches and overall length of 28.86 inches provide ample reach for proper placement within the vehicle’s exhaust system.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering reliable emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct replacement solution tailored for specific vehicle applications like the Lexus IS300. The product line emphasizes compatibility, durability, and performance to support emission compliance and engine management systems.

Common Applications and Issues Addressed

  • Restores accurate air-fuel mixture readings for the Lexus IS300
  • Helps resolve engine performance issues related to faulty oxygen sensors
  • Reduces emissions by ensuring proper sensor operation
  • Prevents check engine light triggers caused by sensor failure
  • Improves fuel economy by providing precise feedback to the engine control unit

Installation Notes and Tips

  • Ensure the vehicle is cool before removing the old sensor to avoid burns
  • Use appropriate tools for threaded sensor removal and installation
  • Verify connector type matches the vehicle harness before installation
  • Do not over-tighten the sensor to prevent damage to threads
  • Check for any exhaust leaks after installation to maintain sensor accuracy

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for emission control components. While specific warranty details for part number 350-34167 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure reliable operation in the Lexus IS300.

BrandWalker
Part Number350-34167
PositionWalker Products Aftermarket, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length28.86
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length25.31

This part fits 10 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2005LexusIS3003.0LL6GASDownstreamDownstream oxygen sensor for cylinders 1-3.; Walker Products Aftermarket
2005LexusIS3003.0LL6GASDownstreamCylinder 1-3 Downstream Oxygen Sensor; Walker Products Aftermarket
2004LexusIS3003.0LL6GASDownstreamDownstream oxygen sensor for cylinders 1-3.; Walker Products Aftermarket
2004LexusIS3003.0LL6GASDownstreamCylinder 1-3 Downstream Oxygen Sensor; Walker Products Aftermarket
2003LexusIS3003.0LL6GASDownstreamDownstream oxygen sensor for cylinders 1-3.; Walker Products Aftermarket
2003LexusIS3003.0LL6GASDownstreamCylinder 1-3 Downstream Oxygen Sensor; Walker Products Aftermarket
2002LexusIS3003.0LL6GASDownstreamDownstream oxygen sensor for cylinders 1-3.; Walker Products Aftermarket
2002LexusIS3003.0LL6GASDownstreamCylinder 1-3 Downstream Oxygen Sensor; Walker Products Aftermarket
2001LexusIS3003.0LL6GASDownstreamDownstream oxygen sensor for cylinders 1-3.; Walker Products Aftermarket
2001LexusIS3003.0LL6GASDownstreamCylinder 1-3 Downstream Oxygen Sensor; Walker Products Aftermarket

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

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.