HomeEmission Control > SensorsSpectra OS5159 Oxygen Sensor
Part #: OS5159

Spectra OS5159 Oxygen Sensor

Downstream Right, Downstream Left, Downstream, and Downstream Front
67 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mitsubishi, Diamante, Eclipse, Endeavor, Galant, Montero, Montero Sport, and Outlander
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Reliable Oxygen Sensor for Mitsubishi Vehicles

The Spectra OS5159 oxygen sensor is designed to provide accurate emissions monitoring for select Mitsubishi models. This sensor helps maintain optimal engine performance and ensures compliance with emission standards.

  • Compatible with Mitsubishi Diamante, Eclipse, Endeavor, Galant, Montero, Montero Sport, and Outlander
  • Part number OS5159 for precise identification and fitment
  • Monitors oxygen levels in exhaust gases to optimize fuel mixture
  • Durable construction for consistent sensor performance
  • Essential component for emission control systems

Product Overview and Functionality

The Spectra OS5159 oxygen sensor plays a critical role in the emission control system by measuring the oxygen content in the exhaust stream. This data is sent to the engine control unit (ECU) to adjust the air-fuel ratio, improving fuel efficiency and reducing harmful emissions. Designed specifically for Mitsubishi vehicles such as the Diamante, Eclipse, Endeavor, Galant, Montero, Montero Sport, and Outlander, this sensor ensures proper fit and function. Using the correct part number OS5159 guarantees compatibility and reliable operation within the vehicle's emission system.

Common Applications and Issues Addressed

  • Helps resolve rough idling caused by incorrect air-fuel mixture
  • Reduces engine hesitation and stalling related to faulty oxygen sensors
  • Prevents increased fuel consumption due to inaccurate sensor readings
  • Assists in passing emissions inspections by maintaining proper exhaust output
  • Mitigates check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Spectra OS5159 oxygen sensor, ensure the vehicle is cool to avoid burns. Locate the existing sensor on the exhaust manifold or pipe, disconnect the electrical connector, and remove the old sensor using an oxygen sensor socket. Install the new sensor by threading it in carefully to avoid cross-threading. Reconnect the electrical connector securely. After installation, it is recommended to clear any diagnostic trouble codes and verify sensor operation with a scan tool.

Quality Assurance and Warranty

Spectra oxygen sensors are manufactured to meet OEM specifications for fit and function. While specific warranty details are not provided here, Spectra products typically come with a limited warranty covering defects in materials and workmanship. Using the correct part number OS5159 ensures compatibility and supports the vehicle’s emission control system integrity.

This part fits 67 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2018MitsubishiOutlander3.0LV6Downstream LeftCompatible with Bank 2 Sensor 2 Oxygen Sensor.
2017MitsubishiOutlander3.0LV6Downstream LeftCompatible with Bank 2 Sensor 2 Oxygen Sensor.
2016MitsubishiOutlander3.0LV6Downstream LeftCompatible with Bank 2 Sensor 2 Oxygen Sensor.
2015MitsubishiOutlander3.0LV6Downstream LeftCompatible with Bank 2 Sensor 2 Oxygen Sensor.
2014MitsubishiMontero Sport3.0LV6GASDownstream Right
2014MitsubishiOutlander3.0LV6Downstream LeftCompatible with Bank 2 Sensor 2 Oxygen Sensor.
2013MitsubishiMontero Sport3.0LV6GASDownstream Right
2013MitsubishiOutlander3.0LV6DownstreamBank 2 Sensor 2 located after left primary catalyst.
2012MitsubishiEclipse3.8LV6Downstream Front
2012MitsubishiMontero Sport3.0LV6GASDownstream Right
2012MitsubishiOutlander3.0LV6DownstreamBank 2 Sensor 2 located after left primary catalyst.
2011MitsubishiEclipse3.8LV6Downstream Front
2011MitsubishiEndeavor3.8LV6Downstream Front
2011MitsubishiMontero Sport3.5LV6GASDownstream Right
2011MitsubishiOutlander3.0LV6DownstreamBank 2 Sensor 2 located after left primary catalyst.
2010MitsubishiEclipse3.8LV6Downstream Front
2010MitsubishiEndeavor3.8LV6Downstream Front
2010MitsubishiMontero Sport3.5LV6GASDownstream Right
2010MitsubishiOutlander3.0LV6DownstreamBank 2 Sensor 2 located after left primary catalyst.
2009MitsubishiEclipse3.8LV6Downstream Front
2009MitsubishiGalant3.8LV6Downstream Front
2009MitsubishiOutlander3.0LV6DownstreamBank 2 Sensor 2 located after left primary catalyst.
2008MitsubishiEclipse3.8LV6Downstream Front
2008MitsubishiEndeavor3.8LV6Downstream Front
2008MitsubishiGalant3.8LV6Downstream Front
2008MitsubishiMontero Sport3.5LV6GASDownstream Right
2008MitsubishiOutlander3.0LV6DownstreamBank 2 Sensor 2 located after left primary catalyst.
2007MitsubishiEclipse3.8LV6Downstream Front
2007MitsubishiEndeavor3.8LV6Downstream Front
2007MitsubishiGalant3.8LV6Downstream Front
2007MitsubishiMontero Sport3.5LV6GASDownstream Right
2007MitsubishiOutlander3.0LV6DownstreamLocated after the left manifold primary catalytic converter.
2006MitsubishiEclipse3.8LV6Downstream Front
2006MitsubishiEndeavor3.8LV6Downstream Front
2006MitsubishiGalant3.8LV6Downstream Front
2006MitsubishiMontero Sport3.5LV6GASDownstream Right
2005MitsubishiEndeavor3.8LV6Downstream Front
2005MitsubishiGalant3.8LV6Downstream Front
2005MitsubishiMontero Sport3.5LV6GASDownstream Right
2004MitsubishiDiamante3.5LV6Downstream Left
2004MitsubishiEndeavor3.8LV6Downstream Front
2004MitsubishiGalant3.8LV6Downstream Front
2004MitsubishiMontero Sport3.5LV6Downstream Right
2003MitsubishiDiamante3.5LV6Downstream Left
2003MitsubishiMontero Sport3.5LV6Downstream Right
2003MitsubishiMontero Sport3.0LV6Downstream Right
2002MitsubishiDiamante3.5LV6Downstream Left
2002MitsubishiMontero Sport3.5LV6Downstream Right
2002MitsubishiMontero Sport3.0LV6Downstream Right
2001MitsubishiDiamante3.5LV6Downstream Left
2001MitsubishiMontero Sport3.5LV6Downstream Right
2001MitsubishiMontero Sport3.0LV6Downstream Right
2000MitsubishiDiamante3.5LV6Downstream LeftCalifornia emissions vehicles only.
2000MitsubishiMontero3.5LV6Downstream RightCalifornia emissions vehicles only.
2000MitsubishiMontero3.5LV6DownstreamFor vehicles with Federal Emissions.
2000MitsubishiMontero Sport3.5LV6Downstream RightCalifornia emissions vehicles only.
2000MitsubishiMontero Sport3.0LV6Downstream RightCalifornia emissions vehicles only.
1999MitsubishiDiamante3.5LV6Downstream LeftCalifornia emissions vehicles only.
1999MitsubishiMontero3.5LV6Downstream RightCalifornia emissions vehicles only.
1999MitsubishiMontero Sport3.5LV6Downstream RightCalifornia emissions vehicles only.
1999MitsubishiMontero Sport3.0LV6Downstream RightCalifornia emissions vehicles only.
1998MitsubishiMontero3.5LV6Downstream RightCalifornia emissions vehicles only.
1998MitsubishiMontero Sport3.0LV6Downstream RightCalifornia emissions vehicles only.
1997MitsubishiMontero3.5LV6Downstream RightCalifornia emissions vehicles only.
1997MitsubishiMontero Sport3.0LV6Downstream RightCalifornia emissions vehicles only.
1996MitsubishiMontero3.0LV6Downstream RightCalifornia emissions vehicles only.
1995MitsubishiMontero3.0LV6Downstream RightCalifornia emissions vehicles only.

* 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:

134121380113822151911522315453154551557715601157931588A10221330732344280234431823446562344657235215S103085S43135S4486752371752842752897752899753060753084753736754027ES10625ES20082MD314062MD330259MD333993MD333995MD357265OS1190OS1882OS1891OS921SG1128SG1128TSG1133SG1133TSG1137SG1137TSG1437SG1437TSG888SG888TSU11761SU6416SU6772

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.