Delphi ES10957 Oxygen Sensor

Delphi ES10957 Oxygen Sensor for Volvo

The Delphi ES10957 is a heated front oxygen sensor built for select Volvo applications that use a 1670 mm overall length sensor. It combines a 3-wire design, square and round connector shape, and 18 x 1.5 mm thread size for direct-fit replacement on listed vehicles.

Key Features

• Heated oxygen sensor for faster operating temperature
• 3-wire configuration
• Square and round connector shape
• 18 x 1.5 mm thread size
• 1670.0 overall length
• Front position application
• Package includes oxygen sensor and instruction sheet

Detailed Description

Delphi ES10957 is an emission control oxygen sensor engineered for front sensor locations on select Volvo 240, Volvo 740, Volvo 760, Volvo 780, Volvo 940, and Volvo 960 models. It is specified with a heated sensing element, 3-wire construction, and a 1670 mm overall length, making it a direct replacement for vehicles that match the listed connector and thread requirements. Delphi draws on OE experience and supplier knowledge developed through decades of original-equipment service.

This part cross-references Bosch 13119 for the same application. Delphi ES10957 is also referenced by multiple aftermarket numbers, including 5S4136 and 138-167, for Volvo oxygen sensor replacement searches.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings from a worn front sensor
• Slow sensor response during closed-loop operation
• Emissions test failures tied to sensor degradation
• Rough idle or drivability issues caused by inaccurate exhaust feedback

Installation Notes and Tips

Verify the connector shape, thread size, and 1670 mm overall length before installation. This sensor is listed for front position use on the specified Volvo applications, including 1990-1993 Volvo 240, 1989-1992 Volvo 740, 1987-1990 Volvo 760, 1987-1990 Volvo 780, 1991 and 1993 Volvo 940, and 1992-1994 Volvo 960. For 740 and 940 applications, confirm the vehicle is without Regina Engine Control System where noted. Follow the included instruction sheet and inspect the harness routing before final tightening.

Quality Assurance

Delphi builds this oxygen sensor with OE heritage and application knowledge developed through long-term original-equipment supply experience. That background supports consistent fitment and sensor construction for Volvo emission control service.