HomeEmission Control > SensorsWalker 250-24278 Oxygen Sensor - Downstream
Part #: 250-24278

Walker 250-24278 Oxygen Sensor - Downstream

Walker Products OE, Downstream
⚙️ 10 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: Toyota, Tacoma
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🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-24278 Oxygen Sensor for Toyota Tacoma

The Walker 250-24278 oxygen sensor is designed specifically for Toyota Tacoma 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: 29.06 inches
  • Wire gauge measurement: 20 gauge
  • Heated sensor type for faster response
  • Specific fit for Toyota Tacoma
  • Four-wire configuration with radiused polygon male connector
  • Thread diameter: 18.0 mm
  • Overall length: 32.6 inches
  • Flange mount for stable positioning

Detailed Product Description

The Walker 250-24278 oxygen sensor is engineered to meet the exact specifications of Toyota Tacoma vehicles. This heated sensor type accelerates the sensor’s response time, improving fuel efficiency and reducing emissions. The four-wire design includes a 20-gauge wiring harness measuring 29.06 inches, providing reliable electrical connectivity. The sensor’s flange mount and 18.0 mm thread diameter ensure a secure and precise fit, while the radiused polygon male connector facilitates straightforward installation without compatibility issues.

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality and fitment. Walker Products OE sensors are manufactured to match or exceed OEM standards, making them suitable replacements for factory-installed components in emission control systems.

Common Applications and Issues Addressed

  • Restores accurate air-fuel mixture readings for Toyota Tacoma engines
  • Helps resolve rough idling and engine hesitation
  • Reduces increased fuel consumption caused by faulty sensors
  • Prevents check engine light triggers related to oxygen sensor faults
  • Supports emission system compliance and reduces harmful exhaust gases

Installation Notes and Tips

  • Ensure vehicle compatibility with Toyota Tacoma models before installation
  • Use proper tools to avoid damaging the 18.0 mm threaded sensor
  • Verify connector type matches the radiused polygon male connector on the vehicle harness
  • Inspect wiring harness length (29.06 inches) for routing clearance
  • 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. The 250-24278 part number undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandWalker
Part Number250-24278
PositionWalker Products OE, Downstream
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeFlange Mount
Overall Length32.6
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length29.06

This part fits 10 vehicles. Search below:

YearMakeModelSubmodelDrive TypeTransmissionLitersCylindersFuel TypePositionNotes
2000ToyotaTacomaDLXRWDManual3.4LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products OE
2000ToyotaTacomaDLXRWDAutomatic3.4LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products OE
2000ToyotaTacomaDLX4WDManual3.4LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products OE
2000ToyotaTacomaDLX4WDAutomatic3.4LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products OE
2000ToyotaTacomaSR5Manual3.4LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products OE
2000ToyotaTacomaSR5Automatic3.4LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products OE
2000ToyotaTacomaLimitedManual3.4LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products OE
2000ToyotaTacomaLimitedAutomatic3.4LV6GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products OE
2000ToyotaTacoma4WD2.7LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2000ToyotaTacoma4WD2.7LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; 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.