Spectra OS5142 Oxygen Sensor - Upstream or Upstream Front

Spectra OS5142 Oxygen Sensor

The Spectra OS5142 oxygen sensor is an OE-style replacement for select Ford, Mazda, and Mercury applications. It is built for the upstream front or upstream location on the listed vehicles and supports accurate exhaust feedback for proper engine management.

• Direct-fit oxygen sensor for select 2001-2006 Ford Escape, Mazda Tribute, and Mercury Mariner applications
• Available for upstream front and upstream positions as listed in fitment
• Engineered to meet or exceed original equipment performance targets
• Cross-references Bosch 15718 and Delphi ES10841 for the same application
• Part number: OS5142

Compatible Vehicle Fitment

• Fits 2001-2006 Ford Escape, Upstream Front
• Fits 2001-2004 Ford Escape, Upstream
• Fits 2001-2006 Mazda Tribute, Upstream Front
• Fits 2001-2004 Mazda Tribute, Upstream
• Fits 2005-2006 Mercury Mariner, Upstream Front

Detailed Description

Spectra Premium manufactures the OS5142 with engineering, production methods, and quality control aimed at matching or exceeding the performance of the original sensor it replaces. This oxygen sensor is used in the exhaust stream to provide feedback to the engine control system, helping maintain correct air-fuel control on the listed Ford Escape, Mazda Tribute, and Mercury Mariner vehicles. If you are replacing a worn sensor on a 2001-2006 Ford Escape or 2001-2006 Mazda Tribute, OS5142 is a direct replacement option for the specified upstream positions.

Common Issues This Part May Address

• Check engine light related to oxygen sensor performance
• Rough idle or inconsistent engine response caused by inaccurate exhaust readings
• Reduced fuel control accuracy from a slow or aging sensor
• Failed emissions inspection tied to sensor fault codes
• Restoring proper upstream exhaust feedback on Ford Escape, Mazda Tribute, or Mercury Mariner models

Installation Notes and Tips

Confirm the sensor position before ordering, since OS5142 is listed for upstream front and upstream applications only. Compare the connector, thread pattern, and harness routing on the removed sensor to the replacement part before installation. For best results, inspect nearby wiring and exhaust components for heat damage or corrosion during service.

Quality Assurance

Spectra Premium states that its oxygen sensors are produced with engineering, manufacturing technology, and quality control processes intended to meet or exceed original equipment performance.