HomeEmission Control > SensorsWalker 350-64075 Oxygen Sensor - Upstream
Part #: 350-64075

Walker 350-64075 Oxygen Sensor - Upstream

Walker Products Aftermarket, Upstream
26 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
Fitment: Mazda, MX-5 and MX-5 Miata
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker Oxygen Sensor 350-64075 for Mazda MX-5

The Walker 350-64075 oxygen sensor is designed specifically for Mazda MX-5 and MX-5 Miata models. 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 wires for reliable operation
  • Specific fit for Mazda MX-5 and MX-5 Miata models
  • 6.42-inch wiring harness length for proper installation
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon female connector for secure connection
  • Overall length of 9.96 inches for correct positioning
  • 20 gauge wire for durability and signal integrity

Walker Products Aftermarket Line Details

The Walker Products Aftermarket line offers replacement parts engineered to meet or exceed OEM specifications. This oxygen sensor from the Walker Products Aftermarket range is built to provide consistent performance and durability, making it a reliable choice for maintaining the emissions system of your Mazda MX-5 or MX-5 Miata.

Product Features and Specifications

This oxygen sensor features a heated sensor type that allows for faster warm-up times and improved fuel efficiency. The 4-wire design supports both the sensor signal and heater circuit, ensuring accurate readings and stable operation. The radiused polygon female connector is designed for a secure and precise fit, reducing the risk of connection issues. With a wiring harness length of 6.42 inches and an overall length of 9.96 inches, this sensor fits perfectly in the designated mounting location using the threaded mounting type with an 18.0 mm thread diameter.

Common Applications and Issues Addressed

  • Restores proper air-fuel ratio monitoring for Mazda MX-5 and MX-5 Miata
  • Resolves check engine light triggers related to oxygen sensor faults
  • Improves fuel economy by providing accurate emissions data
  • Helps reduce harmful exhaust emissions
  • Prevents engine performance issues caused by faulty oxygen sensors

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Use the correct tools to remove the old sensor and install the Walker 350-64075 oxygen sensor, making sure the threaded mounting is tightened to manufacturer specifications. Verify the connector is fully seated and secure to avoid signal interruptions. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.

Quality Assurance and Warranty

Walker oxygen sensors from the Walker Products Aftermarket line are manufactured to meet strict quality standards. While specific warranty details for part number 350-64075 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to ensure reliable performance over time.

BrandWalker
Part Number350-64075
PositionWalker Products Aftermarket, Upstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length9.96
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length6.42

This part fits 26 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2015MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2015MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2014MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2014MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2013MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2013MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2012MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2012MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2011MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2011MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2010MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2010MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2009MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2009MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2008MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2008MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2008MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2008MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2007MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2007MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2007MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2007MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2006MazdaMX-52.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2006MazdaMX-52.0LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2006MazdaMX-5 Miata2.0LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2006MazdaMX-5 Miata2.0LL4GASUpstreamFront oxygen sensor compatible with various 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.