HomeEmission Control > SensorsWalker 250-25032 Oxygen Sensor - Upstream
Part #: 250-25032

Walker 250-25032 Oxygen Sensor - Upstream

Walker Products OE, Upstream
2 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Walker Products OE, Upstream
Fitment: Audi, S8
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Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-25032 Oxygen Sensor for Audi S8

The Walker 250-25032 oxygen sensor is designed specifically for the Audi S8, 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 for accurate emissions monitoring
  • Specific fit for Audi S8 models
  • Threaded mounting with 18.0 mm thread diameter
  • 47.76 inches wiring harness length with 5 wires
  • Radiused polygon male connector for reliable connection
  • Wire gauge measurement of 20 for durability
  • Overall length of 51.3 inches for proper fitment

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-25032) is engineered to meet the exact specifications required by Audi S8 vehicles. The heated sensor type allows for faster warm-up times, improving fuel efficiency and reducing emissions during cold starts. The sensor’s 5-wire configuration and 20-gauge wiring ensure consistent signal transmission and durability under various operating conditions. The radiused polygon male connector provides a secure and precise fit, minimizing the risk of connection issues. With a threaded mounting type and an 18.0 mm thread diameter, installation aligns with factory standards for the Audi S8.

Walker Products OE is a product line focused on delivering original equipment quality parts that match or exceed OEM specifications. This oxygen sensor is part of that line, offering reliable performance and compatibility for emission control systems in specific vehicle applications.

Common Applications and Issues Addressed

  • Maintains accurate air-fuel ratio readings for engine control
  • Helps reduce harmful emissions by monitoring exhaust gases
  • Prevents engine performance issues related to faulty oxygen sensors
  • Resolves check engine light triggers caused by sensor failure
  • Improves fuel economy by ensuring proper combustion

Installation Notes and Tips

  • Ensure compatibility with Audi S8 before installation
  • Use proper tools to avoid damaging the 18.0 mm threaded sensor
  • Check connector orientation for the radiused polygon male plug
  • Verify wiring harness length of 47.76 inches fits routing requirements
  • Follow vehicle manufacturer torque specifications during installation

Quality Assurance and Warranty

The Walker 250-25032 oxygen sensor is manufactured to meet stringent quality standards under the Walker Products OE line. This ensures reliable performance and durability consistent with original equipment parts. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Audi S8 vehicles.

BrandWalker
Part Number250-25032
PositionWalker Products OE, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length51.3
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity5
Wiring Harness Length47.76

This part fits 2 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2007AudiS8Base5.2LV10GASUpstreamCyl 4,5; Cil 4,5; Upstream; Walker Products OE
2007AudiS8Base5.2LV10GASUpstreamCyl 4,5; Upstream; 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.