HomeEmission Control > SensorsWalker 350-35038 Oxygen Sensor - Upstream or Upstream Front
Part #: 350-35038

Walker 350-35038 Oxygen Sensor - Upstream or Upstream Front

Walker Products Aftermarket, Upstream
20 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products Aftermarket, Upstream
Fitment: Mazda, 6
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Overview of Walker Oxygen Sensor 350-35038 for Mazda 6

The Walker 350-35038 oxygen sensor is designed specifically for Mazda 6 models, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon connector, ensuring a secure and accurate fit.

  • Heated oxygen sensor for accurate emissions monitoring
  • Specific fit for Mazda 6 vehicles
  • 23.15-inch wiring harness length with 5 wires
  • Threaded mounting with 18.0 mm thread diameter
  • Radiused polygon connector with male and female ends
  • 20 gauge wire for reliable signal transmission
  • Overall length of 26.69 inches for proper installation

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-35038) is engineered to meet the exact specifications required by Mazda 6 models. The sensor type is heated, which allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 5-wire configuration and 20 gauge wire ensure consistent electrical performance, while the 23.15-inch wiring harness length provides sufficient reach for installation without excess slack.

The threaded mounting type with an 18.0 mm diameter allows for secure attachment to the exhaust system, and the radiused polygon connector shape with both male and female connector genders ensures compatibility with the vehicle’s wiring harness. The overall length of 26.69 inches supports proper placement within the exhaust system for optimal sensor function.

Applications and Problem Solving

  • Helps maintain proper air-fuel mixture for Mazda 6 engines
  • Reduces emissions by providing accurate oxygen level readings
  • Prevents engine performance issues related to faulty sensors
  • Addresses check engine light triggers caused by sensor failure
  • Improves fuel economy by enabling precise engine control

Installation Notes and Tips

  • Ensure vehicle compatibility with Mazda 6 before installation
  • Use proper tools to avoid damaging the 18.0 mm threaded sensor
  • Verify connector orientation matches the radiused polygon shape
  • Handle wiring harness carefully to prevent wire damage
  • Follow manufacturer torque specifications for mounting

Quality Assurance and Warranty

Walker Products Aftermarket parts are manufactured to meet or exceed OEM standards. The 350-35038 oxygen sensor undergoes rigorous testing to ensure durability and reliable performance in emission control systems. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Mazda 6 vehicles.

BrandWalker
Part Number350-35038
PositionWalker Products Aftermarket, Upstream
Connector GenderFemale
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length26.69
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity5
Wiring Harness Length23.15

This part fits 20 vehicles. Search below:

YearMakeModelSubmodelTransmissionLitersCylindersFuel TypePositionNotes
2008Mazda6Manual2.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2008Mazda6Automatic2.3LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
2008Mazda6Manual2.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2008Mazda6Automatic2.3LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
2008Mazda6Automatic2.3LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products Aftermarket
2007Mazda6Manual2.3LL4GASUpstream FrontB1S1; Upstream; Front; Walker Products Aftermarket
2007Mazda6Manual2.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2007Mazda6Automatic2.3LL4GASUpstream FrontNon Calif-ESV; B1S1; No Calif-ESV; Upstream; Front; Walker Products Aftermarket
2007Mazda6Automatic2.3LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
2007Mazda6Manual2.3LL4GASUpstream FrontUpstream Front Oxygen Sensor for Bank 1 Sensor 1; Walker Products Aftermarket
2007Mazda6Manual2.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2007Mazda6Automatic2.3LL4GASUpstream FrontNon Calif-ESV; No Calif-ESV; Upstream; Front; B1S1; Walker Products Aftermarket
2007Mazda6Automatic2.3LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
2007Mazda6Automatic2.3LL4GASUpstream FrontNon Calif-ESV; B1S1; Upstream; Front; Walker Products Aftermarket
2007Mazda6Automatic2.3LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products Aftermarket
2006Mazda6iManual2.3LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2006Mazda6iAutomatic2.3LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products Aftermarket
2006Mazda6iManual2.3LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2006Mazda6iAutomatic2.3LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products Aftermarket
2006Mazda6iAutomatic2.3LL4GASUpstreamUpstream 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.