Delphi ES10406 Oxygen Sensor - Front or Rear

Delphi ES10406 Oxygen Sensor Overview

The Delphi ES10406 is a heated oxygen sensor built for precise exhaust monitoring and reliable engine management feedback. It is a direct-fit style replacement for select Saab, Porsche, and Volvo applications, including front and rear positions where listed.

With OE-based engineering and a 4-wire heated design, this oxygen sensor supports accurate air-fuel control on vehicles such as the Saab 9-3, Porsche 911, and Volvo 850. The ES10406 is built around Delphi’s OE heritage and application-specific fitment data.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire design for common OE-style sensor configurations
• 18 x 1.5 mm thread size for listed applications
• Overall length: 740.0
• Includes oxygen sensor and instruction sheet
• Fits front and rear positions on select vehicles

Detailed Description

Delphi ES10406 is an emission control sensor engineered for vehicles that require a heated oxygen sensor with the specified thread size and wiring configuration. Delphi draws on more than a century of OE experience, and that background is reflected in the sensor’s fitment-focused design and application coverage. This part number, ES10406, is listed for select 1994-1999 Volvo, Saab, and Porsche applications, including 1999 Saab 9-3 front and rear, 1999 Saab 9-5 rear, 1995-1998 Porsche 911 rear, 1996-1998 Saab 900 rear, 1998 Volvo C70 front, 1998 Volvo S70 front, 1998 Volvo V70 front, 1996-1997 Porsche 911 front, and 1994-1997 Volvo 850 front.

This part cross-references Bosch 13577 and DENSO Auto Parts 234-4182 for the same application.

Common Issues This Sensor Can Address

• Fault codes related to oxygen sensor performance
• Rough idle caused by inaccurate exhaust feedback
• Reduced fuel control from a slow or aging sensor
• Failed emissions inspection due to sensor malfunction
• Check engine light triggered by heater circuit or signal issues

Installation Notes and Tips

Confirm the exact position before ordering, since ES10406 is listed for both front and rear locations depending on the vehicle. Verify thread size, connector style, and harness routing against the original sensor before installation. For the listed Saab 9-3 front application, check chassis breakpoints X2020001 and X7020001. Use the vehicle application data to match the correct fitment for your specific model year and position.

Quality Assurance

Delphi builds aftermarket parts using OE experience and supplier knowledge developed with major automakers. The ES10406 reflects that OE-based approach in its sensor design, fitment coverage, and application-specific engineering.