HomeEmission Control > SensorsWalker 250-24059 Oxygen Sensor - Upstream
Part #: 250-24059

Walker 250-24059 Oxygen Sensor - Upstream

Walker Products OE, Upstream
12 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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*Free return shipping only qualifies if our fitment verification tool is used.
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 OE, Upstream
Fitment: Geo and Toyota, Prizm and Corolla
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker Products OE Oxygen Sensor 250-24059

The Walker Products OE Oxygen Sensor 250-24059 is designed specifically for select Geo and Toyota vehicles, including the Corolla and Prizm models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

  • Heated sensor type for faster response times
  • Specific fit for Geo Corolla and Toyota Prizm
  • 7.4-inch wiring harness length with 20 gauge wire
  • Four-wire configuration with radiused polygon male connector
  • Flange mount with 18.0 mm thread diameter and 10.94-inch overall length

Detailed Product Features and Specifications

This oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 7.4-inch wiring harness length and 20 gauge wire ensure reliable electrical connections, while the four-wire setup supports both sensor heating and signal transmission. The radiused polygon male connector provides a secure and precise fit, minimizing the risk of connection issues. The sensor mounts via a flange with an 18.0 mm thread diameter, and the overall length of 10.94 inches accommodates proper installation in the exhaust system.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor from the Walker Products OE series is engineered to provide consistent performance and durability, making it a suitable replacement for the original sensor in Geo Corolla and Toyota Prizm vehicles.

Common Applications and Problem Resolution

  • Restores accurate air-fuel ratio readings for engine control units
  • Helps resolve rough idling and poor fuel economy issues
  • Reduces emissions by ensuring proper catalytic converter function
  • Eliminates check engine light triggers related to oxygen sensor faults
  • Improves overall engine performance and drivability

Installation Notes and Tips

When installing the Walker 250-24059 oxygen sensor, ensure the flange mount is securely tightened to the exhaust pipe to prevent leaks. Verify the connector shape and gender match the vehicle’s wiring harness for a proper electrical connection. It is recommended to use anti-seize compound on the threads to facilitate future removal. Always disconnect the battery before installation to avoid electrical shorts.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable operation and longevity. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Refer to the product documentation for exact warranty terms.

BrandWalker
Part Number250-24059
PositionWalker Products OE, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeFlange Mount
Overall Length10.94
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length7.4

This part fits 12 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1992GeoPrizm1.6LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE
1992GeoPrizm1.6LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; Walker Products OE
1991GeoPrizm1.6LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE
1991GeoPrizm1.6LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; Walker Products OE
1991ToyotaCorolla1.6LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE
1991ToyotaCorolla1.6LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; Walker Products OE
1990GeoPrizm1.6LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE
1990GeoPrizm1.6LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; Walker Products OE
1990ToyotaCorolla1.6LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE
1990ToyotaCorolla1.6LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; Walker Products OE
1989ToyotaCorolla1.6LL4GASUpstreamCompatible with California-ESV vehicles, Upstream Oxygen Sensor; Walker Products OE
1989ToyotaCorolla1.6LL4GASUpstreamCalifornia emissions ESV vehicles oxygen sensor; 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.