Delphi ES10331 Oxygen Sensor

Delphi ES10331 Oxygen Sensor Overview

The Delphi ES10331 is a heated upstream oxygen sensor built for precise exhaust monitoring and reliable engine management feedback. It is a direct-fit replacement for select Volkswagen applications, including EuroVan, Cabriolet, Fox, Corrado, Golf, and Jetta models with listed emissions configurations.

Key Features

• Heated oxygen sensor design for faster operating temperature
• 3-wire configuration with a flat connector shape
• 18 x 1.5 mm thread size for the specified exhaust bung
• Overall length: 605.0
• Upstream position for pre-catalyst exhaust monitoring
• Includes oxygen sensor and instruction sheet
• Built from Delphi OE heritage and supplier experience

Detailed Description

Delphi ES10331 is an upstream heated oxygen sensor engineered for vehicles that rely on accurate air-fuel ratio feedback before the catalytic converter. Delphi draws on more than a century of OE experience and supplier knowledge used by major automakers, bringing that background into this aftermarket replacement. This part cross-references Bosch 13211 for the same application. It is a strong match for Volkswagen EuroVan, Volkswagen Cabriolet with California Emission System, and Volkswagen Golf applications listed in the fitment data, along with other covered Volkswagen models.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rich or lean fuel mixture concerns
• Reduced fuel control accuracy from a slow or aging sensor
• Emissions test failures tied to upstream sensor readings
• Driveability issues caused by incorrect exhaust oxygen feedback

Installation Notes and Tips

• Verify the vehicle year, engine/emissions configuration, and upstream sensor location before ordering.
• Confirm the 3-wire, flat-connector layout and 18 x 1.5 mm thread size match the original part.
• Inspect the exhaust bung and wiring routing before installation.
• Use the included instruction sheet during replacement.
• For Volkswagen Jetta and Golf models, confirm California Emission System notes where listed in the fitment data.

Quality Assurance

Delphi builds this oxygen sensor using OE-focused engineering and manufacturing knowledge developed through long-term supplier relationships with leading automakers. The ES10331 is intended as a dependable replacement for the listed Volkswagen applications and related cross-reference use.