Delphi ES10587 Oxygen Sensor

Delphi ES10587 Oxygen Sensor Overview

The Delphi ES10587 oxygen sensor is a front-position, non-heated sensor built for precise exhaust monitoring in select import applications. With OE experience behind the design, this Delphi oxygen sensor supports accurate air-fuel feedback for vehicles such as the BMW 528e, BMW 318i, Saab 900, and Nissan D21.

• Brand: Delphi
• Part number: ES10587
• Sensor type: Non Heated
• Wire quantity: 1
• Connector shape: Round
• Thread size: 18 x 1.5 mm
• Overall length: 985.0
• Position: Front
• Package contents: Oxygen sensor, instruction sheet

OE-Style Sensor Construction

Delphi builds this oxygen sensor using more than a century of OE experience and supplier knowledge from top automakers. The ES10587 is a front oxygen sensor with a round connector, single-wire design, and 18 x 1.5 mm thread size, making it a direct-spec replacement for the listed applications. This part cross-references DENSO Auto Parts 234-1011 for the same application.

Vehicle Fitment

• Fits 1985 BMW 318i, front.
• Fits 1985-1987 BMW 528e, front.
• Fits 1986-1987 Saab 900, front.
• Fits 1986 Nissan D21, front.

Common Symptoms This Part May Address

• Check engine light related to oxygen sensor performance
• Rough idle or inconsistent fuel mixture control
• Reduced fuel economy from inaccurate exhaust feedback
• Failed emissions test tied to sensor response issues
• Slow or unstable air-fuel ratio correction

Installation Notes

Confirm the connector shape, thread size, wire count, and front sensor location before installation. Inspect the exhaust bung threads and wiring routing, and follow the included instruction sheet during replacement. For BMW 528e, BMW 318i, Saab 900, and Nissan D21 applications, verify the sensor position matches the vehicle’s front oxygen sensor location.

Quality Assurance

Delphi draws on OE heritage and supplier experience used by major automakers, and that engineering background is reflected in the ES10587 oxygen sensor. The included instruction sheet supports a straightforward replacement process.