Walker 350-64143 Oxygen Sensor
OE Quality 60-Day Returns
Walker
 OE Replacement

Walker 350-64143 Oxygen Sensor

Brand Walker 350-64143
Position Upstream, Upstream Right, Upstream Rear, and Upstream Front
Heated Yes
Wiring Harness Length 425
Sensor Type Wide-band
Terminal Type Blade
Universal Or Specific Fit Specific
Wire Quantity 4
Connector Shape Rectangular
Terminal Gender Male
Wrench Size 22
Thread Size M18 - 1.5
Overall Length 425
Mounting Type Threaded
Product line OE Replacement
Fits INFINITI and Nissan · 46 vehicles

OE replacement. Engineered as a direct-fit oxygen sensor for specific applications.

Wide-band sensor. Delivers precise diagnostic feedback to the ECU.

Heated design. Helps the sensor reach operating temperature quickly.

$120.99Free shipping
In stock · usually ships same day before 1pm CST
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Walker OE Replacement Oxygen Sensor 350-64143

Walker OE Replacement oxygen sensor part number 350-64143 is a specific-fit, heated wide-band sensor built for direct replacement in select Nissan and INFINITI applications. It is engineered to provide the ECU with the diagnostic feedback needed for accurate air-fuel control, emissions monitoring, and drivability.

Key Features

  • Heated wide-band oxygen sensor for precise exhaust feedback
  • Specific-fit design for the listed upstream positions
  • 4-wire configuration with blade terminals and rectangular connector
  • Threaded mounting with M18 x 1.5 thread size
  • 425 mm overall length and harness length
  • 22 mm wrench size for service access

Product Details

Walker Products OE Replacement sensors are built as application-specific replacements for vehicles that rely on accurate oxygen and air-fuel ratio data. Part number 350-64143 is designed for upstream sensor locations and supports ECU monitoring on vehicles such as the Nissan Altima, Nissan Pathfinder, Nissan Murano, Nissan Maxima, Nissan Armada, Nissan TITAN, Nissan TITAN XD, and INFINITI QX50, QX55, QX60, and QX80. This sensor line is part of Walker Products Engine Management and Oxygen/Air-Fuel sensor coverage, developed for fitment position, connector style, and diagnostic output requirements.

This part cross-references no listed aftermarket part numbers for the same application.

Common Symptoms Addressed

  • Check engine light or malfunction indicator light related to oxygen sensor performance
  • Poor engine operation caused by incorrect air-fuel feedback
  • Increased fuel consumption from inaccurate exhaust sensing
  • Elevated exhaust emissions from a failing upstream sensor
  • Fault codes stored in the ECU for sensor or related system faults

Installation Notes

Fits 2019-2022 INFINITI QX50, Upstream. Fits 2022 INFINITI QX55, Upstream. Fits 2019-2021 Nissan Altima, Upstream. Fits 2021 Nissan Maxima, Upstream Front. Fits 2022-2025 Nissan Altima, Upstream. Fits 2024-2025 Nissan Pathfinder, Upstream Rear. Fits 2020 Nissan Pathfinder, Upstream Rear. Fits 2024 INFINITI QX60, Upstream Rear. Fits 2022-2024 INFINITI QX80, Upstream Right. Fits 2022-2024 Nissan Armada, Upstream Right. Fits 2024 Nissan Murano, Upstream Rear. Fits 2020-2024 Nissan TITAN, Upstream Right. Fits 2020-2024 Nissan TITAN XD, Upstream Right. Fits 2022-2023 INFINITI QX60, Upstream Right. Fits 2022-2023 Nissan Maxima, Upstream Right. Fits 2020-2023 Nissan Murano, Upstream Right. Fits 2022-2023 Nissan Pathfinder, Upstream Right.

Verify the connector shape, wire count, thread size, and sensor position before installation. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since damaged wiring can shorten sensor life and affect ECU readings.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and manufactures this OE Replacement sensor to application-specific standards. The company is ISO 9001/TS 16949 certified, with cataloging and packaging support built around modern automotive service needs.

Related reading

This part fits 46 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2026NissanAltima2.5LL4—UpstreamOE Replacement
2026NissanPathfinder3.5LV6—Upstream RearOE Replacement
2025NissanAltima2.5LL4—UpstreamOE Replacement
2025NissanPathfinder3.5LV6—Upstream RearOE Replacement
2024INFINITIQX603.5LV6—Upstream RearOE Replacement
2024INFINITIQX805.6LV8—Upstream RightOE Replacement
2024NissanAltima2.5LL4—UpstreamOE Replacement
2024NissanArmada5.6LV8—Upstream RightOE Replacement
2024NissanMurano3.5LV6—Upstream RearOE Replacement
2024NissanPathfinder3.5LV6—Upstream RearOE Replacement
2024NissanTITAN5.6LV8—Upstream RightOE Replacement
2024NissanTITAN XD5.6LV8—Upstream RightOE Replacement
2023INFINITIQX603.5LV6—Upstream RightOE Replacement
2023INFINITIQX805.6LV8—Upstream RightOE Replacement
2023NissanAltima2.5LL4—UpstreamOE Replacement
2023NissanArmada5.6LV8—Upstream RightOE Replacement
2023NissanMaxima3.5LV6—Upstream RightOE Replacement
2023NissanMurano3.5LV6—Upstream RightOE Replacement
2023NissanPathfinder3.5LV6—Upstream RightOE Replacement
2023NissanTITAN5.6LV8—Upstream RightOE Replacement
2023NissanTITAN XD5.6LV8—Upstream RightOE Replacement
2022INFINITIQX502.0LL4—UpstreamB1S1; OE Replacement
2022INFINITIQX552.0LL4—UpstreamB1S1; OE Replacement
2022INFINITIQX603.5LV6—Upstream RightOE Replacement
2022INFINITIQX805.6LV8—Upstream RightOE Replacement
2022NissanAltima2.5LL4—UpstreamOE Replacement
2022NissanArmada5.6LV8—Upstream RightOE Replacement
2022NissanMaxima3.5LV6—Upstream RightOE Replacement
2022NissanMurano3.5LV6—Upstream RightOE Replacement
2022NissanPathfinder3.5LV6—Upstream RightOE Replacement
2022NissanTITAN5.6LV8—Upstream RightOE Replacement
2022NissanTITAN XD5.6LV8—Upstream RightOE Replacement
2021INFINITIQX502.0LL4—UpstreamB1S1; OE Replacement
2021NissanAltima2.5LL4GASUpstreamB1S1; OE Replacement
2021NissanMaxima3.5LV6—Upstream FrontOE Replacement
2021NissanMurano3.5LV6—Upstream RightOE Replacement
2021NissanTITAN5.6LV8—Upstream RightOE Replacement
2021NissanTITAN XD5.6LV8—Upstream RightOE Replacement
2020INFINITIQX502.0LL4—UpstreamB1S1; OE Replacement
2020NissanAltima2.5LL4GASUpstreamB1S1; OE Replacement
2020NissanMurano3.5LV6—Upstream RightOE Replacement
2020NissanPathfinder3.5LV6—Upstream RearOE Replacement
2020NissanTITAN5.6LV8—Upstream RightOE Replacement
2020NissanTITAN XD5.6LV8—Upstream RightOE Replacement
2019INFINITIQX502.0LL4—UpstreamB1S1; OE Replacement
2019NissanAltima2.5LL4GASUpstreamB1S1; OE Replacement