HomeEmission Control > SensorsWalker 350-34153 Oxygen Sensor - Downstream Rear
Part #: 350-34153

Walker 350-34153 Oxygen Sensor - Downstream Rear

Walker Products Aftermarket, Downstream Rear
⚙️ 4 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products Aftermarket, Downstream Rear
🚗Fitment: Mazda, Millenia
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 350-34153 Oxygen Sensor for Mazda Millenia

The Walker 350-34153 oxygen sensor is designed specifically for the Mazda Millenia, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

  • Heated oxygen sensor with 4-wire configuration
  • Specific fit for Mazda Millenia models
  • Threaded mounting with 18.0 mm thread diameter
  • 37.52 inches wiring harness length and 41.06 inches overall length
  • 20 gauge wire for reliable signal transmission
  • Radiused polygon male connector for secure connection

Detailed Product Description

The Walker 350-34153 oxygen sensor is engineered to meet the exact specifications required by the Mazda Millenia. Featuring a heated sensor type, it helps the engine control module accurately monitor and adjust the air-fuel mixture for efficient combustion and reduced emissions. The sensor includes a 4-wire setup with 20 gauge wires, providing stable and consistent electrical signals. Its 37.52-inch wiring harness length and 41.06-inch overall length allow for proper routing and fitment within the vehicle’s engine bay. The threaded mounting type with an 18.0 mm diameter ensures a secure and leak-free installation. The radiused polygon male connector is designed for a precise fit, minimizing the risk of disconnection or electrical issues.

Walker Products Aftermarket Line

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The product line emphasizes exact fitment and quality construction to support emission system performance and regulatory compliance for vehicles like the Mazda Millenia.

Common Applications and Issues Addressed

  • Restores accurate oxygen sensing for proper air-fuel ratio management
  • Helps resolve engine performance problems related to faulty sensors
  • Reduces emissions by ensuring correct exhaust gas readings
  • Prevents check engine light triggers caused by sensor failure
  • Supports fuel efficiency by maintaining optimal combustion conditions

Installation Notes and Tips

  • Ensure the vehicle is cool before sensor removal to avoid burns
  • Use appropriate tools for threaded sensor removal and installation
  • Verify connector type matches the vehicle harness before installation
  • Do not over-tighten the sensor to prevent damage to threads
  • Check wiring harness routing to avoid contact with hot or moving parts

Quality Assurance and Warranty

The Walker 350-34153 oxygen sensor is manufactured to meet industry standards for emission control sensors. It undergoes rigorous testing to ensure durability and reliable performance in the Mazda Millenia. While specific warranty details are not provided here, Walker Products Aftermarket parts typically come with a limited warranty covering defects in materials and workmanship.

BrandWalker
Part Number350-34153
PositionWalker Products Aftermarket, Downstream Rear
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length41.06
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length37.52

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2000MazdaMillenia2.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
1999MazdaMillenia2.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
1998MazdaMillenia2.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products Aftermarket
1997MazdaMillenia2.5LV6GASDownstream 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.

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.