HomeEmission Control > SensorsWalker 350-64081 Oxygen Sensor - Upstream
Part #: 350-64081

Walker 350-64081 Oxygen Sensor - Upstream

Walker Products Aftermarket, Upstream
⚙️ 35 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$112.82Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ 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
🚗Fitment: Scion and Toyota, tC, xB, Camry, and Solara
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-64081 Oxygen Sensor

The Walker 350-64081 oxygen sensor is designed specifically for select Toyota and Scion models, including the Camry, Solara, tC, and xB. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

  • Heated oxygen sensor with 4-wire design for reliable operation
  • Specific fit for Toyota Camry, Solara, and Scion tC, xB models
  • 18.23-inch wiring harness length with 20-gauge wire for durability
  • Threaded mounting type with 18.0 mm thread diameter for secure installation
  • Radiused polygon male connector for proper electrical connection
  • Overall length of 21.77 inches to accommodate factory fitment

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-64081) is engineered to meet the exact specifications required by Toyota and Scion vehicles such as the Camry, Solara, tC, and xB. Featuring a heated sensor element, it quickly reaches operating temperature to provide accurate oxygen level readings, which are critical for maintaining efficient combustion and reducing emissions. The sensor includes a 4-wire configuration with 20-gauge wiring, ensuring stable signal transmission and heater circuit functionality. Its 18.23-inch wiring harness length and radiused polygon male connector are designed for a precise fit, minimizing installation complications. The threaded mounting type with an 18.0 mm diameter allows for secure attachment to the exhaust system, while the overall length of 21.77 inches supports proper positioning within the vehicle's emission control system.

The Walker Products Aftermarket line focuses on delivering reliable replacement parts that meet or exceed OEM standards. This oxygen sensor is part of that line, providing a direct-fit solution that supports emission compliance and engine efficiency for the specified Toyota and Scion models.

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

  • Ensure vehicle compatibility with Toyota Camry, Solara, or Scion tC, xB models before installation
  • Use proper tools to avoid damaging the threaded sensor during removal or installation
  • Check wiring harness length and connector type to confirm fitment
  • Follow manufacturer torque specifications for mounting to prevent leaks or sensor damage
  • Allow the sensor to reach operating temperature for accurate diagnostics after installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. While specific warranty details for part number 350-64081 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Toyota and Scion vehicles.

BrandWalker
Part Number350-64081
PositionWalker Products Aftermarket, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length21.77
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length18.23

This part fits 35 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2010SciontC2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2010SciontC2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2010ScionxB2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2010ScionxB2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2009SciontC2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2009SciontC2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2009ScionxB2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2009ScionxB2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2008ScionxB2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2008ScionxB2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2008ToyotaCamry2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2008ToyotaCamry2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2007ToyotaCamry2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2007ToyotaCamry2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2007ToyotaSolara2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2007ToyotaSolara2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2006ToyotaCamry2.4LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products Aftermarket
2006ToyotaCamry2.4LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
2006ToyotaCamry2.4LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; Walker Products Aftermarket
2006ToyotaCamry2.4LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
2006ToyotaCamry2.4LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products Aftermarket
2006ToyotaSolara2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2006ToyotaSolara2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2005ToyotaCamry2.4LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products Aftermarket
2005ToyotaCamry2.4LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
2005ToyotaCamry2.4LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; Walker Products Aftermarket
2005ToyotaCamry2.4LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
2005ToyotaCamry2.4LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products Aftermarket
2005ToyotaSolara2.4LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2005ToyotaSolara2.4LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2004ToyotaCamry2.4LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
2004ToyotaCamry2.4LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products Aftermarket
2004ToyotaCamry2.4LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
2004ToyotaCamry2.4LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; Walker Products Aftermarket
2004ToyotaCamry2.4LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; 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.