HomeEmission Control > SensorsWalker 350-34290 Oxygen Sensor
Part #: 350-34290

Walker 350-34290 Oxygen Sensor

Walker Products Aftermarket, Downstream Front, Downstream Right, Downstream Left, and Downstream
21 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 Aftermarket, Downstream Front, Downstream Right, Downstream Left, and Downstream
Fitment: INFINITI and Nissan, I35, Maxima, Pathfinder, QX4, and Sentra
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker Oxygen Sensor 350-34290

The Walker 350-34290 oxygen sensor is designed specifically for select Infiniti and Nissan models, including the I35, Maxima, Pathfinder, QX4, and Sentra. 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 Infiniti and Nissan vehicles
  • 32.99-inch wiring harness length for proper installation
  • 20-gauge wire measurement with 4 wires for reliable signal transmission
  • Radiused polygon male connector for secure connection
  • 18.0 mm threaded mounting for direct replacement
  • Overall length of 36.54 inches for compatibility with factory locations

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The line emphasizes precise fitment and quality construction to meet or exceed OEM standards, ensuring dependable performance in emission systems for Infiniti and Nissan vehicles.

Product Features and Specifications

The Walker 350-34290 oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor includes a 32.99-inch wiring harness with 20-gauge wires and a total of four wires, supporting accurate signal transmission and heater circuit functionality. Its radiused polygon male connector ensures a secure and proper connection to the vehicle's wiring harness. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the designated exhaust port. With an overall length of 36.54 inches, this sensor fits precisely in the exhaust system of compatible Infiniti and Nissan models.

Compatible Vehicles and Applications

  • Infiniti I35 oxygen sensor replacement
  • Nissan Maxima emission sensor upgrade
  • Nissan Pathfinder oxygen sensor repair
  • Nissan QX4 heated oxygen sensor fitment
  • Nissan Sentra specific oxygen sensor installation

Installation Notes and Tips

When installing the Walker 350-34290 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness or connector. Verify the connector shape and gender match the vehicle’s harness for a secure fit. Thread the sensor carefully into the exhaust port to prevent cross-threading. After installation, clear any diagnostic trouble codes and perform a system check to confirm proper operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. The 350-34290 part number undergoes rigorous testing to comply with emission control requirements for Infiniti and Nissan vehicles. Warranty details are provided by the manufacturer and typically cover defects in materials and workmanship under normal use.

BrandWalker
Part Number350-34290
PositionWalker Products Aftermarket, Downstream Front, Downstream Right, Downstream Left, and Downstream
Wiring Harness Length32.99
Wire Gauge Measurement20
Sensor TypeHeated
Universal Or Specific FitSpecific
Wire Quantity4
Connector ShapeRadiused polygon
Connector GenderMale
Thread Diameter18.0
Overall Length36.54
Mounting TypeThreaded

This part fits 21 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersFuel TypePositionNotes
2004INFINITII353.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products Aftermarket
2003INFINITII353.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products Aftermarket
2003INFINITIQX43.5LV6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
2003NissanMaxima3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products Aftermarket
2002INFINITII353.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products Aftermarket
2002INFINITIQX43.5LV6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
2002NissanMaxima3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products Aftermarket
2002NissanPathfinder3.5LV6GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products Aftermarket
2002NissanSentraXE1.8LL4GASDownstream LeftExc. CA Series; Excluye Serie CA; Downstream; Left; Walker Products Aftermarket
2002NissanSentraGXE1.8LL4GASDownstream LeftExc. CA Series; Excluye Serie CA; Downstream; Left; Walker Products Aftermarket
2002NissanSentraCA1.8LL4GASDownstreamOxygen Sensor for California vehicles with ESV regulations.; Walker Products Aftermarket
2002NissanSentraXE1.8LL4GASDownstream LeftExc. CA Series; Downstream; Left; Walker Products Aftermarket
2002NissanSentraGXE1.8LL4GASDownstream LeftExc. CA Series; Downstream; Left; Walker Products Aftermarket
2001INFINITIQX43.5LV6GASDownstream RightFrom 9/2001; Del 9/2001; Downstream; Right; Walker Products Aftermarket
2001INFINITIQX43.5LV6GASDownstream RightFrom September 2001, downstream position on the right side.; Walker Products Aftermarket
2001NissanPathfinder3.5LV6GASDownstream RightDel 08/2000; Downstream; Right; From 08/2000; Walker Products Aftermarket
2001NissanPathfinder3.5LV6GASDownstream RightDownstream right oxygen sensor for vehicles manufactured from August 2000.; Walker Products Aftermarket
2001NissanSentraXE1.8LL4GASDownstream RightExcludes CA Series with Mid Year Emissions; Downstream; Right; Walker Products Aftermarket
2001NissanSentraGXE1.8LL4GASDownstream RightExcludes CA Series with Mid Year Emissions; Downstream; Right; Walker Products Aftermarket
2001NissanSentraXE1.8LL4GASDownstream RightExc.CA Series, w/ Mid Year Emissions; Downstream; Right; Walker Products Aftermarket
2001NissanSentraGXE1.8LL4GASDownstream RightExc.CA Series, w/ Mid Year Emissions; Downstream; Right; Walker Products Aftermarket

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.