HomeEmission Control > SensorsWalker 250-24433 Oxygen Sensor - Downstream
Part #: 250-24433

Walker 250-24433 Oxygen Sensor - Downstream

Walker Products OE, Downstream
7 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, Downstream
Fitment: Nissan and Mercury, Quest and Villager
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-24433 Oxygen Sensor

The Walker 250-24433 oxygen sensor is designed specifically for Mercury Quest and Nissan Villager models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

  • Heated sensor type for faster response times
  • Specific fit for Mercury Quest and Nissan Villager
  • 30.24-inch wiring harness length for convenient installation
  • 20 gauge wire measurement with 4 wires for reliable signal transmission
  • Radiused polygon female connector for secure connection
  • Threaded mounting type with 18.0 mm thread diameter
  • Overall length of 33.78 inches for proper fitment

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. The 250-24433 oxygen sensor from this line is engineered to provide consistent performance and durability, ensuring compatibility and reliability for Mercury Quest and Nissan Villager vehicles.

Product Description and Attributes

This oxygen sensor features a heated design, which allows it to reach operating temperature quickly, improving emissions control efficiency. The 4-wire configuration supports both the sensor signal and the heating element, enhancing sensor responsiveness. The wiring harness length of 30.24 inches and overall length of 33.78 inches provide ample reach for installation in the specified vehicles. The radiused polygon female connector ensures a secure and precise fit, while the threaded mounting type with an 18.0 mm diameter allows for straightforward replacement without modifications.

Common Applications and Issues Addressed

  • Helps maintain proper air-fuel ratio for Mercury Quest and Nissan Villager
  • Reduces emissions by providing accurate oxygen level readings
  • Prevents engine performance issues related to faulty sensors
  • Addresses check engine light triggers caused by sensor failure
  • Improves fuel efficiency by ensuring correct sensor operation

Installation Notes and Tips

  • Ensure vehicle compatibility with Mercury Quest or Nissan Villager before installation
  • Use appropriate tools for threaded mounting to avoid damage
  • Verify connector type matches the vehicle harness (radiused polygon female)
  • Handle wiring harness carefully to prevent damage during installation
  • Follow vehicle manufacturer torque specifications for sensor mounting

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 250-24433 part number undergoes rigorous testing to comply with emissions regulations and OEM requirements. Warranty details are provided by the manufacturer and typically cover defects in materials and workmanship.

BrandWalker
Part Number250-24433
PositionWalker Products OE, Downstream
Connector GenderFemale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length33.78
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length30.24

This part fits 7 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2000NissanQuest3.3LV6GASDownstreamDownstream placement for vehicles without California emissions certification.; Walker Products OE
2000NissanQuest3.3LV6GASDownstreamDownstream Oxygen Sensor compatible with Non-California ESV vehicles.; Walker Products OE
1999MercuryVillager3.3LV6GASDownstreamDownstream placement for vehicles without California emissions certification.; Walker Products OE
1999MercuryVillager3.3LV6GASDownstreamDownstream Oxygen Sensor compatible with Non-California ESV vehicles.; Walker Products OE
1999NissanQuest3.3LV6GASDownstreamDownstream placement for vehicles without California emissions certification.; Walker Products OE
1999NissanQuest3.3LV6GASDownstreamDownstream Oxygen Sensor compatible with Non-California ESV vehicles.; Walker Products OE
1998NissanQuest3.0LV6GASDownstreamDownstream oxygen sensor for vehicle installation.; 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.