Delphi ES10942 Oxygen Sensor - Front

Delphi ES10942 Front Oxygen Sensor

The Delphi ES10942 oxygen sensor is built for front-position applications on select Subaru and Saab vehicles. With OE-based engineering and a 4-wire square connector, it supports accurate exhaust feedback for proper fuel control and emissions performance.

Key Features

• Front oxygen sensor for emission control applications
• 4-wire design with square connector shape
• 18 x 1.5 mm thread size for direct-fit installation on listed vehicles
• 960.0 overall length
• Package contents include the oxygen sensor and instruction sheet
• Backed by Delphi’s OE heritage and supplier experience with major automakers

Detailed Description

Delphi ES10942 is a front oxygen sensor engineered for vehicles that rely on precise exhaust monitoring to maintain air-fuel balance and emissions compliance. Delphi draws on more than a century of OE experience, and that background is reflected in the sensor design and application coverage. This part is a direct replacement for front sensor locations on 2004-2014 Subaru Impreza, 2004-2010 Subaru Forester, 2005-2007 Subaru Legacy, 2005-2007 Subaru Outback, and 2006 Saab 9-2X. It also fits 2005 Subaru Legacy and 2005 Subaru Outback with California Emission System. If you are searching for a front oxygen sensor for Subaru Impreza, Forester, Legacy, Outback, or Saab 9-2X, Delphi ES10942 is a relevant OE-style replacement option. This part cross-references Bosch 15011 and DENSO Auto Parts 234-9034 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect fuel trim readings from a worn front sensor
• Reduced emissions control accuracy
• Rough idle or drivability issues tied to exhaust feedback
• Slow or inconsistent sensor response on the front position

Installation Notes and Tips

Confirm the front sensor location, connector shape, thread size, and wire count before ordering. Compare the original sensor connector and harness routing to the Delphi ES10942, especially on Subaru Impreza, Forester, Legacy, and Outback applications. Use the included instruction sheet during installation and verify proper thread engagement with the 18 x 1.5 mm sensor bung. After installation, clear diagnostic trouble codes and confirm the repair with a scan tool and road test.

Quality Assurance

Delphi builds this oxygen sensor using OE heritage and application knowledge developed through long-term supplier experience with leading automakers. That background supports consistent fitment and sensor performance for front emission control service on the listed vehicles.