HomeEmission Control > SensorsWalker 250-24435 Oxygen Sensor - Downstream Left
Part #: 250-24435

Walker 250-24435 Oxygen Sensor - Downstream Left

Walker Products OE, Downstream Left
4 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$85.71Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*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, Downstream Left
Fitment: INFINITI and Nissan, QX4 and Pathfinder
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker 250-24435 Oxygen Sensor for Nissan and Infiniti

The Walker Products OE 250-24435 oxygen sensor is designed specifically for select Nissan and Infiniti vehicles, including the Pathfinder and QX4 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 oxygen sensor with 4-wire configuration
  • Specific fit for Nissan Pathfinder and Infiniti QX4
  • Wiring harness length of 45.59 inches for proper routing
  • Threaded mounting type with 18.0 mm thread diameter
  • Radiused polygon male connector for secure connection
  • Wire gauge measurement of 20 for reliable signal transmission
  • Overall length of 49.13 inches for installation compatibility

Walker Products OE Line Details

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-24435 oxygen sensor is part of this line, ensuring compatibility and performance tailored to the exact requirements of Nissan and Infiniti vehicles. This product line emphasizes precise fitment and durability, supporting emission control systems effectively.

Technical Description and Attributes

This oxygen sensor features a heated sensor type with a 4-wire design, which allows for faster sensor warm-up and improved accuracy in measuring exhaust gases. The wiring harness length of 45.59 inches provides sufficient length for proper installation without excess slack. The sensor’s connector is a radiused polygon male type, designed to fit securely with the vehicle’s wiring harness. The threaded mounting type with an 18.0 mm diameter ensures a tight and reliable fit in the exhaust system. The wire gauge of 20 supports stable electrical signals, contributing to consistent sensor performance.

Common Applications and Problem Solving

  • Restores accurate oxygen sensing for proper air-fuel mixture control
  • Helps resolve engine performance issues related to faulty sensors
  • Reduces emissions by ensuring correct exhaust gas readings
  • Prevents check engine light triggers caused by sensor failure
  • Supports fuel efficiency by maintaining optimal combustion

Installation Notes and Tips

When installing the Walker 250-24435 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Properly route the wiring harness to prevent contact with hot or moving parts. Torque the sensor to manufacturer specifications to ensure a secure fit.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. This part number 250-24435 undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.

BrandWalker
Part Number250-24435
PositionWalker Products OE, Downstream Left
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length49.13
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length45.59

This part fits 4 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2001INFINITIQX43.5LV6GASDownstream LeftTo 9/2001; Al 9/2001; Downstream; Left; Walker Products OE
2001INFINITIQX43.5LV6GASDownstream LeftUp to September 2001, downstream left position.; Walker Products OE
2001NissanPathfinder3.5LV6GASDownstream LeftAl 08/2000; Downstream; Left; To 08/2000; Walker Products OE
2001NissanPathfinder3.5LV6GASDownstream LeftDownstream left oxygen sensor compatible with vehicles made up to August 2000.; 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.