HomeEmission Control > SensorsWalker 350-34185 Oxygen Sensor - Downstream Front, Downstream Rear or Upstream
Part #: 350-34185

Walker 350-34185 Oxygen Sensor - Downstream Front, Downstream Rear or Upstream

OE Replacement, Downstream Front, Downstream Rear, and Upstream
12 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
OE Replacement, Downstream Front, Downstream Rear, and Upstream
Fitment: Chevrolet, Ford, and Mazda, 626, Beat, MX-6, Probe, and Spark
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Oxygen Sensor for Chevrolet, Ford, and Mazda Vehicles

The Walker 350-34185 oxygen sensor is designed to provide accurate emissions control for specific Chevrolet, Ford, and Mazda models. This heated oxygen sensor ensures optimal engine performance and emission regulation by delivering precise air-fuel mixture data to the vehicle’s engine control unit.

  • Heated oxygen sensor with threaded mounting type for secure installation
  • Specific fit for Chevrolet 626, Ford Probe, Mazda MX-6, Beat, and Spark models
  • 20.39-inch wiring harness length with 4 wires and 20 gauge measurement
  • Radiused polygon male connector for reliable electrical connection
  • 18.0 mm thread diameter and 23.94-inch overall length for exact fitment

Walker Products Aftermarket Line Overview

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing quality emission control components tailored to specific vehicle applications. The line emphasizes precise fitment and reliable sensor performance to meet or exceed OEM standards, supporting proper engine management and emissions compliance.

Detailed Product Description

The Walker 350-34185 oxygen sensor features a heated sensor element that allows for faster activation and improved accuracy in monitoring exhaust gases. Its 4-wire design supports both the sensor signal and heater circuit, ensuring consistent operation under various driving conditions. The radiused polygon male connector and threaded mounting type provide a secure and stable connection, reducing the risk of sensor failure due to vibration or poor contact. With a wiring harness length of 20.39 inches and an overall length of 23.94 inches, this sensor is engineered for a precise fit in the specified Chevrolet, Ford, and Mazda models.

Common Applications and Issues Addressed

  • Helps maintain proper air-fuel ratio for efficient combustion
  • Reduces harmful emissions by providing accurate oxygen level data
  • Prevents engine performance issues such as rough idling or hesitation
  • Supports resolution of check engine light codes related to oxygen sensors
  • Improves fuel economy by enabling optimal engine tuning

Installation Notes and Tips

Ensure the vehicle is cool before removing the old oxygen sensor to avoid burns. Use the correct tools to avoid damaging the sensor or threads. Verify the connector type matches the vehicle harness for a secure fit. Follow torque specifications for the 18.0 mm threaded mounting to prevent leaks or sensor damage. Inspect wiring for any signs of wear or damage before installation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards for durability and performance. The 350-34185 part number undergoes rigorous testing to ensure compatibility and reliability in Chevrolet, Ford, and Mazda vehicles. Warranty details are provided by the manufacturer and should be reviewed prior to installation.

BrandWalker
Part Number350-34185
PositionOE Replacement, Downstream Front, Downstream Rear, and Upstream
Wiring Harness Length20.39
Wire Gauge Measurement20
Sensor TypeHeated
Universal Or Specific FitSpecific
Wire Quantity4
Connector ShapeRadiused polygon
Connector GenderMale
Thread Diameter18.0
Overall Length23.94
Mounting TypeThreaded

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2021ChevroletBeat1.2LL4UpstreamOE Replacement
2020ChevroletBeat1.2LL4UpstreamOE Replacement
2019ChevroletBeat1.2LL4UpstreamOE Replacement
2018ChevroletBeat1.2LL4UpstreamOE Replacement
2012ChevroletSpark1.2LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2012ChevroletSpark1.2LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
2011ChevroletSpark1.2LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products Aftermarket
2011ChevroletSpark1.2LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products Aftermarket
1997FordProbe2.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products Aftermarket
1996FordProbe2.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
1996Mazda6262.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
1996MazdaMX-62.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.