HomeEmission Control > SensorsWalker 350-34065 Oxygen Sensor - Downstream
Part #: 350-34065

Walker 350-34065 Oxygen Sensor - Downstream

Walker Products Aftermarket, Downstream
2 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: Mazda, 6
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34065 Oxygen Sensor for Mazda 6

The Walker 350-34065 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 male connector for secure installation.

  • Wiring harness length: 24.13 inches
  • Wire gauge measurement: 20 gauge
  • Heated sensor type for faster response
  • Specific fit for Mazda 6
  • Four-wire configuration
  • Radiused polygon male connector
  • Thread diameter: 18.0 mm
  • Overall length: 27.68 inches
  • Threaded mounting type

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34065) is engineered to meet the exact specifications required for Mazda 6 vehicles. The heated sensor design allows for quicker activation and more accurate readings of the exhaust gases, which is critical for maintaining optimal engine efficiency and reducing emissions. The four-wire setup includes both the sensor signal and heater circuit, ensuring reliable operation under various driving conditions.

The sensor’s wiring harness length of 24.13 inches and overall length of 27.68 inches provide ample reach for installation without excess slack. The 20-gauge wire ensures durability and resistance to heat and vibration. The radiused polygon male connector and 18.0 mm threaded mounting type allow for a secure and precise fit, minimizing the risk of leaks or sensor failure.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, designed to provide reliable performance and compatibility with specific vehicle applications like the Mazda 6. Walker’s commitment to quality ensures that this sensor integrates seamlessly with the vehicle’s existing systems.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for proper air-fuel mixture control
  • Helps resolve engine performance issues such as rough idling or hesitation
  • Reduces emissions by ensuring correct catalytic converter operation
  • Prevents check engine light triggers related to oxygen sensor faults
  • Improves fuel economy by maintaining optimal combustion efficiency

Installation Notes and Tips

  • Ensure the vehicle is cool before removing the old sensor to avoid burns
  • Use appropriate tools to avoid damaging the 18.0 mm threaded mounting
  • Verify connector compatibility with the radiused polygon male plug
  • Check wiring harness routing to prevent contact with hot or moving parts
  • Follow vehicle-specific torque specifications when installing the sensor

Quality Assurance and Warranty

The Walker 350-34065 oxygen sensor is manufactured to meet strict quality standards for durability and performance. As part of the Walker Products Aftermarket line, it undergoes rigorous testing to ensure reliable operation in Mazda 6 vehicles. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandWalker
Part Number350-34065
PositionWalker Products Aftermarket, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length27.68
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length24.13

This part fits 2 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2007Mazda62.3LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products Aftermarket
2006Mazda6Mazdaspeed2.3LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; 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.