Delphi ES10820 Oxygen Sensor - Front

Delphi ES10820 Front Oxygen Sensor

The Delphi ES10820 is a heated front oxygen sensor built for precise exhaust feedback on select Volvo applications. It is a direct-fit emission control sensor for 1993-1994 Volvo 850 models with an air pump, using a 4-wire design, flat connector, and 18 x 1.5 mm thread size.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• Front position sensor for exhaust monitoring upstream of the catalyst
• 4-wire configuration with flat connector shape
• 18 x 1.5 mm thread size and 505.0 overall length
• Includes oxygen sensor and instruction sheet
• Built from Delphi OE heritage and aftermarket engineering knowledge

Detailed Description

Delphi ES10820 is engineered for 1993-1994 Volvo 850 front applications with an air pump. As a heated oxygen sensor, it helps the engine control system read exhaust oxygen content more quickly after startup, supporting accurate fuel management and emissions monitoring. Delphi draws on more than a century of OE experience and supplier relationships with major automakers, and that background is reflected in the sensor design and fitment-focused construction. This part cross-references Bosch 13517 for the same application.

For Volvo 850 owners searching for a front oxygen sensor, Delphi ES10820 provides the correct thread, connector style, and wire count for the listed vehicle application. It is also referenced by part number ES10820 for catalog and search matching.

What It Helps Address

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

Installation Notes and Tips

Verify the vehicle is a 1993-1994 Volvo 850 with air pump equipment before ordering. Match the front sensor position, 4-wire layout, flat connector, and 18 x 1.5 mm thread size to the original part. Inspect the harness routing and connector condition before installation, and follow the included instruction sheet for proper replacement steps. Confirm the application by part number ES10820 when comparing catalog listings.

Quality Assurance

Delphi builds this oxygen sensor using OE-based engineering knowledge developed through long-term supply experience with major automakers. The ES10820 is designed to meet the fitment and functional requirements of the listed Volvo 850 front application.