Spectra Premium® OS5191 - Upstream Oxygen Sensor

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Spectra Premium® - Upstream Oxygen SensorSpectra Premium® - Upstream Oxygen SensorSpectra Premium® - Upstream Oxygen SensorSpectra Premium® - Upstream Oxygen SensorSpectra Premium® - Oxygen Sensor Installation InstructionsSpectra Premium® - Oxygen Sensor FeaturesSpectra Premium Authorized Dealer
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Spectra Premium Repair Parts

Upstream Oxygen Sensor (OS5191) by Spectra Premium®. To ensure your vehicle has optimal performance and fuel economy while producing minimal emissions replace a defective O2 sensor with one backed by the aftermarket’s most rigorous testing process. It comes with anti-seize applied, a protective cap to protect the sensing element and includes everything necessary for installation.

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  • Increase vehicle fuel economy and engine performance while decreasing vehicle exhaust emissions
  • 100% performance tested to meet vehicle requirements
  • Anti-seize pre-applied to prevent corrosion that could make the sensor difficult to remove
  • Protective cap protects the sensing element from dirt and contamination
  • Fully water proof and resistant to external climate conditions (car wash, puddle spray, dust, etc.)
  • Continuous quality testing throughout the manufacturing process
  • Electrical connectors are an exact match to vehicle mating harness
  • Robust sensing element manufacturing process to ensure product specifications and performance
  • Included rubber grommets, tie wraps, push in clips, where applicable, for installation
  • QR Code provides instant access to part specific information
  • Trilingual branded packaging & Spectra part number engraved on the part itself
  • Backed by a one-year warranty

Since 1996, all OBD II vehicles have been manufactured with at least 2 oxygen sensors designed to detect the concentration of oxygen in the exhaust gas. Using input from those sensors the engine control computer regulates the air/fuel mixture and monitors catalytic converter function to ensure proper engine performance, optimum mileage, and low emission of air pollutants from the vehicle. This is the reason why your O2 sensor should always operate at its peak. If testing shows your sensor is faulty, replace it with this Oxygen Sensor by Spectra Premium designed especially for your make and model to provide exact OE fit, form, and function.

This product is 100% performance and durability tested to meet vehicle requirements. First the prototype undergoes validation testing including an engine bench test, performance test, salt water submergence test, exhaust seal leak test, connector leak test, and wire pull test. During production, welding, electrical and sealing tests are performed and inspections conducted to ensure proper performance and application. Finally, 3rd party lab testing is performed to ensure resistance to water and humidity, vibration, and extensive product life cycle. With anti-seize pre-applied, the sensor is protected from galling and corrosion and resistant to external climate conditions such as dust, car wash, puddle spray, etc., while its sensitive elements are protected from dirt and contamination by the protective cap. The sensor comes ready to install with all required rubber grommets, tie wraps, and push in clips.

Spectra Premium was founded in 1989 and grew into one of the leading manufacturers of radiators, heaters, condensers, oil pans, filler necks, fuel tanks, etc. for passenger cars and heavy-duty vehicles. With its 17 locations and 1200 employees, the company exceeds the highest expectations of its clients by employing strategies of continuous improvement, progressive engineering, and product validation to the manufacture of its products. Spectra Premium has quality certifications such as ISO 9001:2000 | FM 65146, ISO/TS-16949:2002 | TS506759, ISO 14001:2004 | CA05/3605/E, and ISO 9001:2008 | FM 70893 that cover design and manufacture of fuel system, oil pan and radiator components as well as aluminum radiators and tooling for the automotive and heavy duty markets.

Part Number:

Vehicle Fitment

This part is compatible with 87 vehicle(s)
Year Make Model Fitment Notes:
2012 Nissan Frontier
  • 2.5L
2011 Nissan Frontier
  • 2.5L
2010 Infiniti M45
2010 Nissan Frontier
  • 2.5L
2009 Infiniti M45
2009 Nissan Frontier
  • 2.5L
2009 Nissan Quest
2008 Infiniti FX35
2008 Infiniti FX45
2008 Infiniti M35
2008 Infiniti M45
2008 Nissan Frontier
  • 2.5L
2008 Nissan Maxima
2008 Nissan Quest
2007 Infiniti G35
2007 Infiniti M35
2007 Nissan Frontier
  • 2.5L
2007 Nissan Maxima
2007 Nissan Murano
2007 Nissan Quest
2006 Cadillac SRX
  • 4.6L
2006 Cadillac STS
  • 4.6L
2006 Infiniti FX35
2006 Infiniti FX45
2006 Infiniti G35
2006 Infiniti M35
2006 Infiniti M45
2006 Infiniti Q45
  • 3.60" Engine Bore
2006 Infiniti QX56
2006 Nissan 350Z
2006 Nissan Altima
2006 Nissan Armada
2006 Nissan Frontier
  • 2.5L / 4.0L
2006 Nissan Maxima
2006 Nissan Murano
2006 Nissan Pathfinder
2006 Nissan Quest
  • 3.21" Engine Stroke
2006 Nissan Sentra
  • 1769 CC / 1809 CC / 2500 CC
2006 Nissan Titan
2006 Nissan Xterra
2005 Cadillac CTS
  • With Rectangular Connector
2005 Cadillac CTS
  • Fits Models with Rectangular Connector.
2005 Cadillac SRX
  • Fits Models with Rectangular Connector.
2005 Cadillac STS
  • Fits Models with Rectangular Connector.
2005 Cadillac XLR
  • Fits Models with 548mm Wire Length.
2005 Infiniti FX35
2005 Infiniti G35
2005 Infiniti QX56
2005 Nissan 350Z
2005 Nissan Altima
2005 Nissan Armada
2005 Nissan Frontier
2005 Nissan Maxima
2005 Nissan Murano
2005 Nissan Pathfinder
2005 Nissan Quest
2005 Nissan Sentra
  • 1769 CC / 1809 CC / 2500 CC
2005 Nissan Titan
2005 Nissan Xterra
2004 Cadillac CTS
  • 3.6L
2004 Cadillac SRX
2004 Cadillac XLR
2004 Infiniti FX35
2004 Infiniti G35
  • AWD (All Wheel Drive)
2004 Infiniti QX56
2004 Nissan Altima
  • 2.5L
2004 Nissan Maxima
2004 Nissan Murano
2004 Nissan Pathfinder
2004 Nissan Quest
2004 Nissan Sentra
  • 1769 CC / 1809 CC
2004 Nissan Sentra
  • 2.5L Automatic Transmission
  • Fits Models without California Emission.
2004 Nissan Titan
2003 Nissan Sentra
  • 1769 CC / 1809 CC
  • Fits Models without California Emission.
2003 Nissan Sentra
  • 1769 CC / 1809 CC
  • Fits Models Manufactured before April
  • Fits Models with California Emission
2002 Nissan Sentra
  • 1769 CC / 1809 CC Clean Air Vehicle
2002 Subaru Forester
2002 Subaru Impreza
2002 Subaru Legacy
2002 Subaru Outback
  • 2.5L
2001 Nissan Sentra
  • 1769 CC / 1809 CC Clean Air Vehicle
2001 Subaru Forester
2001 Subaru Impreza
  • 2.5L
2001 Subaru Legacy
  • Automatic Transmission
2001 Subaru Outback
  • 2.5L Automatic Transmission
2000 Nissan Sentra
  • 1.8L Clean Air Vehicle
2000 Subaru Forester
2000 Subaru Impreza
  • 2.5L
2000 Subaru Legacy
  • Automatic Transmission
2000 Subaru Outback
  • Automatic Transmission
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Spectra Premium® - Upstream Oxygen SensorSpectra Premium® OS5191 - Upstream Oxygen Sensor    $172.83
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