HomeEmission Control > SensorsWalker 250-24765 Oxygen Sensor - Downstream or Upstream
Part #: 250-24765

Walker 250-24765 Oxygen Sensor - Downstream or Upstream

Walker Products OE, Downstream
⚙️ 3 vehicles fit this part
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Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
📦Walker Products OE, Downstream
🚗Fitment: Saturn, Astra
🔄Easy Returns — Return within 60 days for a full refund
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Overview of Walker 250-24765 Oxygen Sensor for Saturn Astra

The Walker Products OE 250-24765 oxygen sensor is designed specifically for the Saturn Astra, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector for secure installation.

  • Heated oxygen sensor with 4 wires for accurate readings
  • Specific fitment for Saturn Astra models
  • 16.26-inch wiring harness length for flexible placement
  • Threaded mounting with 18.0 mm thread diameter
  • Radiused polygon female connector for reliable connection
  • Wire gauge measurement of 20 for durability and signal integrity
  • Overall length of 19.8 inches for proper fit

Detailed Product Description

The Walker Products OE 250-24765 oxygen sensor is engineered to meet the exact specifications of the Saturn Astra. This heated sensor type improves warm-up time and provides accurate oxygen level readings to the engine control unit, helping maintain efficient fuel combustion and reduced emissions. The sensor includes a 16.26-inch wiring harness and four wires with a 20-gauge measurement, ensuring reliable electrical performance. Its radiused polygon female connector and threaded mounting with an 18.0 mm diameter allow for a secure and precise fit, minimizing installation issues and sensor movement.

Walker Products OE is a product line focused on delivering original equipment quality parts that match or exceed factory standards. This oxygen sensor is part of that line, providing a direct replacement that supports the emission control system of your Saturn Astra without modification.

Common Applications and Issues Addressed

  • Restores accurate air-fuel ratio readings for improved engine efficiency
  • Helps resolve rough idling caused by faulty oxygen sensors
  • Reduces increased emissions and failed emissions tests
  • Prevents engine hesitation and poor acceleration
  • Eliminates check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

  • Ensure the vehicle is cool before sensor removal to avoid burns
  • Use appropriate oxygen sensor socket for threaded installation
  • Verify connector type matches the vehicle harness before installation
  • Do not over-tighten the sensor; follow torque specifications
  • Inspect wiring harness for damage before connecting

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. The 250-24765 part number undergoes rigorous testing to comply with emission control requirements for the Saturn Astra. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandWalker
Part Number250-24765
PositionWalker Products OE, Downstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length19.8
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length16.26

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2008SaturnAstra1.8LL4GASUpstreamBank 1 Sensor 1 needs an upstream oxygen sensor.; Walker Products OE
2008SaturnAstra1.8LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2008SaturnAstra1.8LL4GASUpstreamFront oxygen sensor compatible with various vehicle models.; Walker Products OE

* 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.