HomeEmission Control > SensorsWalker 250-24448 Oxygen Sensor
Part #: 250-24448

Walker 250-24448 Oxygen Sensor

Walker Products OE, Downstream Left
83 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 Left
Fitment: INFINITI and Nissan, M45, Quest, FX45, Maxima, Murano, FX35, G35, M35, Q45, 350Z, Altima, and Sentra
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Overview of Walker 250-24448 Oxygen Sensor for Nissan and Infiniti

The Walker 250-24448 oxygen sensor is designed specifically for select Nissan and Infiniti models, including the 350Z, Altima, FX35, and G35. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

  • Heated oxygen sensor with 4-wire design for precise readings
  • Specific fit for Nissan and Infiniti vehicles such as Maxima, Murano, and Q45
  • 12.52-inch wiring harness length with 20-gauge wire for reliable connectivity
  • Threaded mounting type with 18.0 mm thread diameter for secure installation
  • Radiused polygon male connector for proper fit and electrical connection
  • Overall length of 16.06 inches to accommodate factory specifications

Detailed Features and Specifications

This Walker Products OE oxygen sensor (part number 250-24448) features a heated sensor type that allows for faster warm-up times and improved fuel efficiency. The 4-wire configuration supports both the sensor element and the heater circuit, ensuring consistent operation under various driving conditions. The wiring harness length of 12.52 inches and 20-gauge wire measurement provide durability and ease of installation. The sensor’s threaded mounting type with an 18.0 mm diameter matches factory OEM specifications for a secure fit. Additionally, the radiused polygon male connector ensures compatibility with the vehicle’s wiring harness, reducing the risk of connection issues.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering emission control components that meet or exceed original equipment standards. This oxygen sensor is part of that line, designed to provide reliable performance and fitment for specific Nissan and Infiniti models. Walker Products OE parts are engineered to maintain factory-level emissions compliance and sensor accuracy, supporting vehicle longevity and regulatory requirements.

Common Applications and Issues Addressed

  • Replacement for faulty or failing oxygen sensors in Nissan Altima and Infiniti FX45
  • Resolves engine performance issues related to incorrect air-fuel mixture readings
  • Helps correct rough idling and poor fuel economy caused by sensor malfunction
  • Addresses check engine light triggers related to oxygen sensor faults
  • Supports emissions system compliance for vehicles like the Nissan Sentra and Infiniti M35

Installation Notes and Tips

When installing the Walker 250-24448 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 shape and gender match the vehicle’s wiring harness before installation. Proper torque specifications should be followed to prevent leaks or sensor damage. It is recommended to clear any diagnostic trouble codes after installation to reset the vehicle’s computer system.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain emissions compliance and supports the vehicle’s onboard diagnostics system.

BrandWalker
Part Number250-24448
PositionWalker Products OE, Downstream Left
Connector GenderMale
Connector ShapeRadiused Polygon
Mounting TypeThreaded
Overall Length16.06
Sensor TypeHeated
Thread Diameter18.0
Universal Or Specific FitSpecific
Wire Gauge Measurement20
Wire Quantity4
Wiring Harness Length12.52

This part fits 83 vehicles. Search below:

YearMakeModelTransmissionLitersCylindersFuel TypePositionNotes
2010INFINITIM454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2009INFINITIM454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2009NissanQuest3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2008INFINITIFX454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2008INFINITIM454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2008NissanMaxima3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2008NissanMaxima3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2008NissanMurano3.5LV6Downstream RearOE Base Sensor
2008NissanQuest3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2007INFINITIFX454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2007INFINITIM454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2007NissanMaxima3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2007NissanMurano3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2007NissanMurano3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2007NissanQuest3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2006INFINITIFX353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2006INFINITIFX454.5LV8GASDownstream LeftDel 11/2005; Downstream; Left; From 11/2005; Walker Products OE
2006INFINITIFX454.5LV8GASDownstream LeftAl 11/2005; Downstream; Left; To 11/2005; Walker Products OE
2006INFINITIFX454.5LV8GASDownstream LeftDownstream; Left; From 11/2005; Walker Products OE
2006INFINITIFX454.5LV8GASDownstream LeftDownstream; Left; To 11/2005; Walker Products OE
2006INFINITIG353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2006INFINITIM353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2006INFINITIM454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2006INFINITIQ454.5LV8GASDownstream LeftFrom 12/2005; Del 12/2005; Downstream; Left; Walker Products OE
2006INFINITIQ454.5LV8GASDownstream LeftTo 12/2005; Al 12/2005; Downstream; Left; Walker Products OE
2006INFINITIQ454.5LV8GASDownstream LeftFrom 12/2005; Downstream; Left; Walker Products OE
2006INFINITIQ454.5LV8GASDownstream Left12/2005 Downstream Left Oxygen Sensor; Walker Products OE
2006Nissan350Z3.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2006NissanAltima3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2006NissanAltima2.5LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2006NissanMaxima3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2006NissanMurano3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2006NissanMurano3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2006NissanPickup2.4LL4UpstreamOE Base Sensor
2006NissanQuest3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2006NissanSentra2.5LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2005INFINITIFX353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2005INFINITIFX454.5LV8GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products OE
2005INFINITIG353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2005INFINITIQ454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2005Nissan350Z3.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2005NissanAltima3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2005NissanAltima2.5LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2005NissanMaxima3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2005NissanMurano3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2005NissanMurano3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2005NissanPickup2.4LL4UpstreamOE Base Sensor
2005NissanQuest3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2005NissanSentra2.5LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2004INFINITIFX353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2004INFINITIFX454.5LV8GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products OE
2004INFINITIG353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2004INFINITIM454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2004INFINITIQ454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2004Nissan350Z3.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2004NissanAltima3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2004NissanAltima2.5LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2004NissanMaxima3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2004NissanMurano3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2004NissanMurano3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2004NissanPickup2.4LL4UpstreamOE Base Sensor
2004NissanQuest3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2004NissanSentraManual2.5LL4GASDownstreamFits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE
2004NissanSentraAutomatic2.5LL4GASDownstreamDownstream oxygen sensor for B1S2 position in California emissions.; Walker Products OE
2004NissanSentraAutomatic2.5LL4GASDownstreamDownstream oxygen sensor for B1S2, not for vehicles in California.; Walker Products OE
2004NissanSentraAutomatic2.5LL4GASDownstreamDownstream oxygen sensor compatible with California-ESV vehicles in bank 1 position 2.; Walker Products OE
2004NissanSentraAutomatic2.5LL4GASDownstreamDownstream Bank 1 Sensor 2 for Non-Calif-ESV vehicles.; Walker Products OE
2004NissanSentraAutomatic2.5LL4GASDownstreamDownstream oxygen sensor for second bank, sensor 1, non-California emissions.; Walker Products OE
2003INFINITIFX353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2003INFINITIFX454.5LV8GASDownstream RightInstall downstream oxygen sensor on the right side.; Walker Products OE
2003INFINITIG353.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2003INFINITIM454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2003INFINITIQ454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2003Nissan350Z3.5LV6GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2003NissanMurano3.5LV6GASDownstream RearRear downstream oxygen sensor must be installed in correct position.; Walker Products OE
2003NissanMurano3.5LV6GASDownstream FrontDownstream front oxygen sensor required.; Walker Products OE
2003NissanPickup2.4LL4UpstreamOE Base Sensor
2002INFINITIQ454.5LV8GASDownstream LeftDownstream left oxygen sensor required.; Walker Products OE
2002NissanPickup2.4LL4UpstreamOE Base Sensor
2001NissanPickup2.4LL4UpstreamOE Base Sensor
2000NissanPickup2.4LL4UpstreamOE Base Sensor
1999NissanPickup2.4LL4UpstreamOE Base Sensor
1998NissanPickup2.4LL4UpstreamOE Base Sensor

* 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.