HomeEmission Control > SensorsWalker 350-64014 Oxygen Sensor - Upstream Front or Upstream Rear
Part #: 350-64014

Walker 350-64014 Oxygen Sensor - Upstream Front or Upstream Rear

Walker Products Aftermarket, Upstream Front
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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In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products Aftermarket, Upstream Front
Fitment: Toyota and Lexus, Avalon, Sienna, and ES300
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-64014 Oxygen Sensor

The Walker 350-64014 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Avalon, ES300, and Sienna. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

  • Heated sensor type for faster response times
  • Specific fit for Lexus Avalon, Toyota ES300, and Sienna
  • 15.28-inch wiring harness length for convenient installation
  • 20 gauge wire measurement with 4 wires for reliable signal transmission
  • Radiused polygon male connector for secure connection
  • Threaded mounting type with 18.0 mm thread diameter
  • Overall length of 18.82 inches for proper fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-64014) is engineered to meet the exact specifications of your vehicle’s emission system. The heated sensor element allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire design includes a heater circuit and signal wires, ensuring consistent and accurate readings. The radiused polygon male connector provides a secure and corrosion-resistant connection, while the threaded mounting type with an 18.0 mm diameter ensures a proper and stable fit in the exhaust system.

Walker Products Aftermarket is a dedicated product line focused on delivering reliable replacement parts that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a direct fit solution for Lexus and Toyota vehicles that require precise emission control components.

Compatible Vehicles and Common Applications

  • Lexus Avalon oxygen sensor replacement
  • Toyota ES300 emission sensor upgrade
  • Toyota Sienna oxygen sensor repair
  • Emission control sensor for specific Lexus and Toyota models
  • Replacement sensor for vehicles with threaded mounting and 18 mm thread diameter

Installation Notes and Tips

  • Ensure the vehicle is cool before installation to avoid burns
  • Disconnect the battery to prevent electrical shorts during replacement
  • Use appropriate tools to remove the old sensor and install the new threaded sensor securely
  • Verify connector compatibility with the radiused polygon male connector before installation
  • 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, ensuring durability and reliable performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using the Walker 350-64014 oxygen sensor helps maintain your vehicle’s emission system integrity and supports compliance with environmental regulations.

BrandWalker
Part Number350-64014
PositionWalker Products Aftermarket, Upstream Front
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length18.82
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length15.28

This part fits 10 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2004ToyotaAvalon3.0LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2003ToyotaAvalon3.0LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2003ToyotaSienna3.0LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2002ToyotaAvalon3.0LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2002ToyotaSienna3.0LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2001LexusES3003.0LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2001ToyotaAvalon3.0LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; Walker Products Aftermarket
2001ToyotaSienna3.0LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2000LexusES3003.0LV6GASUpstream RearUpstream oxygen sensor for rear exhaust system.; Walker Products Aftermarket
2000ToyotaAvalon3.0LV6GASUpstream FrontFront upstream oxygen sensor needed for proper functionality near exhaust manifold.; 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.