OE Quality
60-Day Returns

Spectra OS5159 Oxygen Sensor
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:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Mitsubishi | Outlander | 3.0L | V6 | Downstream Left | Compatible with Bank 2 Sensor 2 Oxygen Sensor. | |
| 2017 | Mitsubishi | Outlander | 3.0L | V6 | Downstream Left | Compatible with Bank 2 Sensor 2 Oxygen Sensor. | |
| 2016 | Mitsubishi | Outlander | 3.0L | V6 | Downstream Left | Compatible with Bank 2 Sensor 2 Oxygen Sensor. | |
| 2015 | Mitsubishi | Outlander | 3.0L | V6 | Downstream Left | Compatible with Bank 2 Sensor 2 Oxygen Sensor. | |
| 2014 | Mitsubishi | Montero Sport | 3.0L | V6 | GAS | Downstream Right | |
| 2014 | Mitsubishi | Outlander | 3.0L | V6 | Downstream Left | Compatible with Bank 2 Sensor 2 Oxygen Sensor. | |
| 2013 | Mitsubishi | Montero Sport | 3.0L | V6 | GAS | Downstream Right | |
| 2013 | Mitsubishi | Outlander | 3.0L | V6 | Downstream | Bank 2 Sensor 2 located after left primary catalyst. | |
| 2012 | Mitsubishi | Eclipse | 3.8L | V6 | Downstream Front | ||
| 2012 | Mitsubishi | Montero Sport | 3.0L | V6 | GAS | Downstream Right | |
| 2012 | Mitsubishi | Outlander | 3.0L | V6 | Downstream | Bank 2 Sensor 2 located after left primary catalyst. | |
| 2011 | Mitsubishi | Eclipse | 3.8L | V6 | Downstream Front | ||
| 2011 | Mitsubishi | Endeavor | 3.8L | V6 | Downstream Front | ||
| 2011 | Mitsubishi | Montero Sport | 3.5L | V6 | GAS | Downstream Right | |
| 2011 | Mitsubishi | Outlander | 3.0L | V6 | Downstream | Bank 2 Sensor 2 located after left primary catalyst. | |
| 2010 | Mitsubishi | Eclipse | 3.8L | V6 | Downstream Front | ||
| 2010 | Mitsubishi | Endeavor | 3.8L | V6 | Downstream Front | ||
| 2010 | Mitsubishi | Montero Sport | 3.5L | V6 | GAS | Downstream Right | |
| 2010 | Mitsubishi | Outlander | 3.0L | V6 | Downstream | Bank 2 Sensor 2 located after left primary catalyst. | |
| 2009 | Mitsubishi | Eclipse | 3.8L | V6 | Downstream Front | ||
| 2009 | Mitsubishi | Galant | 3.8L | V6 | Downstream Front | ||
| 2009 | Mitsubishi | Outlander | 3.0L | V6 | Downstream | Bank 2 Sensor 2 located after left primary catalyst. | |
| 2008 | Mitsubishi | Eclipse | 3.8L | V6 | Downstream Front | ||
| 2008 | Mitsubishi | Endeavor | 3.8L | V6 | Downstream Front | ||
| 2008 | Mitsubishi | Galant | 3.8L | V6 | Downstream Front | ||
| 2008 | Mitsubishi | Montero Sport | 3.5L | V6 | GAS | Downstream Right | |
| 2008 | Mitsubishi | Outlander | 3.0L | V6 | Downstream | Bank 2 Sensor 2 located after left primary catalyst. | |
| 2007 | Mitsubishi | Eclipse | 3.8L | V6 | Downstream Front | ||
| 2007 | Mitsubishi | Endeavor | 3.8L | V6 | Downstream Front | ||
| 2007 | Mitsubishi | Galant | 3.8L | V6 | Downstream Front | ||
| 2007 | Mitsubishi | Montero Sport | 3.5L | V6 | GAS | Downstream Right | |
| 2007 | Mitsubishi | Outlander | 3.0L | V6 | Downstream | Located after the left manifold primary catalytic converter. | |
| 2006 | Mitsubishi | Eclipse | 3.8L | V6 | Downstream Front | ||
| 2006 | Mitsubishi | Endeavor | 3.8L | V6 | Downstream Front | ||
| 2006 | Mitsubishi | Galant | 3.8L | V6 | Downstream Front | ||
| 2006 | Mitsubishi | Montero Sport | 3.5L | V6 | GAS | Downstream Right | |
| 2005 | Mitsubishi | Endeavor | 3.8L | V6 | Downstream Front | ||
| 2005 | Mitsubishi | Galant | 3.8L | V6 | Downstream Front | ||
| 2005 | Mitsubishi | Montero Sport | 3.5L | V6 | GAS | Downstream Right | |
| 2004 | Mitsubishi | Diamante | 3.5L | V6 | Downstream Left | ||
| 2004 | Mitsubishi | Endeavor | 3.8L | V6 | Downstream Front | ||
| 2004 | Mitsubishi | Galant | 3.8L | V6 | Downstream Front | ||
| 2004 | Mitsubishi | Montero Sport | 3.5L | V6 | Downstream Right | ||
| 2003 | Mitsubishi | Diamante | 3.5L | V6 | Downstream Left | ||
| 2003 | Mitsubishi | Montero Sport | 3.5L | V6 | Downstream Right | ||
| 2003 | Mitsubishi | Montero Sport | 3.0L | V6 | Downstream Right | ||
| 2002 | Mitsubishi | Diamante | 3.5L | V6 | Downstream Left | ||
| 2002 | Mitsubishi | Montero Sport | 3.5L | V6 | Downstream Right | ||
| 2002 | Mitsubishi | Montero Sport | 3.0L | V6 | Downstream Right | ||
| 2001 | Mitsubishi | Diamante | 3.5L | V6 | Downstream Left | ||
| 2001 | Mitsubishi | Montero Sport | 3.5L | V6 | Downstream Right | ||
| 2001 | Mitsubishi | Montero Sport | 3.0L | V6 | Downstream Right | ||
| 2000 | Mitsubishi | Diamante | 3.5L | V6 | Downstream Left | California emissions vehicles only. | |
| 2000 | Mitsubishi | Montero | 3.5L | V6 | Downstream Right | California emissions vehicles only. | |
| 2000 | Mitsubishi | Montero | 3.5L | V6 | Downstream | For vehicles with Federal Emissions. | |
| 2000 | Mitsubishi | Montero Sport | 3.5L | V6 | Downstream Right | California emissions vehicles only. | |
| 2000 | Mitsubishi | Montero Sport | 3.0L | V6 | Downstream Right | California emissions vehicles only. | |
| 1999 | Mitsubishi | Diamante | 3.5L | V6 | Downstream Left | California emissions vehicles only. | |
| 1999 | Mitsubishi | Montero | 3.5L | V6 | Downstream Right | California emissions vehicles only. | |
| 1999 | Mitsubishi | Montero Sport | 3.5L | V6 | Downstream Right | California emissions vehicles only. | |
| 1999 | Mitsubishi | Montero Sport | 3.0L | V6 | Downstream Right | California emissions vehicles only. | |
| 1998 | Mitsubishi | Montero | 3.5L | V6 | Downstream Right | California emissions vehicles only. | |
| 1998 | Mitsubishi | Montero Sport | 3.0L | V6 | Downstream Right | California emissions vehicles only. | |
| 1997 | Mitsubishi | Montero | 3.5L | V6 | Downstream Right | California emissions vehicles only. | |
| 1997 | Mitsubishi | Montero Sport | 3.0L | V6 | Downstream Right | California emissions vehicles only. | |
| 1996 | Mitsubishi | Montero | 3.0L | V6 | Downstream Right | California emissions vehicles only. | |
| 1995 | Mitsubishi | Montero | 3.0L | V6 | Downstream Right | California 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:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.