HomeEmission Control > SensorsWalker 250-24158 Oxygen Sensor - Upstream
Part #: 250-24158

Walker 250-24158 Oxygen Sensor - Upstream

Walker Products OE, Upstream
6 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: Toyota, Celica
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Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-24158 Oxygen Sensor for Toyota Celica

The Walker 250-24158 oxygen sensor is designed specifically for Toyota Celica models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a flange mount and a radiused polygon male connector for secure installation.

  • Wiring harness length: 10.35 inches
  • Wire gauge measurement: 20 gauge
  • Heated sensor type for faster response
  • Specific fit for Toyota Celica
  • Four-wire configuration
  • Radiused polygon male connector shape
  • Thread diameter: 18.0 mm
  • Overall length: 13.9 inches
  • Flange mount for stable positioning

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-24158) is engineered to meet the exact specifications of Toyota Celica vehicles. The heated sensor design allows for quicker warm-up times, improving fuel efficiency and reducing emissions shortly after engine start. With a 10.35-inch wiring harness and 20-gauge wires, this sensor provides reliable electrical connectivity. The four-wire setup supports both the sensor signal and heater circuit, ensuring consistent operation. The radiused polygon male connector and flange mount design facilitate a secure and precise fit, minimizing installation issues and maintaining sensor stability during vehicle operation.

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 solution for emission control systems in Toyota Celica models.

Common Applications and Issues Addressed

  • Restores accurate oxygen level readings for engine control units
  • Helps resolve rough idling caused by faulty sensors
  • Reduces increased fuel consumption due to sensor failure
  • Corrects check engine light triggers related to oxygen sensor faults
  • Improves emissions compliance by maintaining proper air-fuel mixture

Installation Notes and Tips

  • Ensure vehicle compatibility with Toyota Celica models before installation
  • Use appropriate tools to avoid damaging the 18.0 mm thread diameter
  • Verify connector orientation matches the radiused polygon male connector
  • Inspect wiring harness length (10.35 inches) for proper routing
  • Follow manufacturer torque specifications for flange mount installation

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. This part number 250-24158 undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.

BrandWalker
Part Number250-24158
PositionWalker Products OE, Upstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeFlange Mount
Overall Length13.9
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length10.35

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1991ToyotaCelica1.6LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products OE
1991ToyotaCelica1.6LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products OE
1991ToyotaCelica1.6LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; Walker Products OE
1990ToyotaCelica1.6LL4GASUpstreamNon California emissions certified; Bank 1 Sensor 1; Upstream position; Not suitable for California emissionscertified vehicles; Walker Products OE
1990ToyotaCelica1.6LL4GASUpstreamFor vehicles without California and Federal Emissions - Upstream Bank 1 Sensor 1.; Walker Products OE
1990ToyotaCelica1.6LL4GASUpstreamUpstream oxygen sensor for bank 1 sensor 1 incompatible with California-ESV vehicles.; 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.