Delphi ES10290 Oxygen Sensor

Delphi ES10290 Oxygen Sensor for BMW

The Delphi ES10290 is a heated oxygen sensor built for precise exhaust feedback and stable engine management. It draws on Delphi’s OE heritage and is a direct-fit option for select BMW applications, including 1992-1995 BMW 318i, 318is, 318ti, 325i, 325is, M3, 530i, and 840Ci.

Key Features

• Heated oxygen sensor for faster operating temperature and consistent signal response
• 4-wire design for the specified vehicle applications
• Round connector shape for OE-style electrical connection
• 18 x 1.5 mm thread size for proper exhaust bung fitment
• Overall length: 425.0 mm
• Package includes the oxygen sensor and instruction sheet
• Position: center, upstream for the listed applications

Detailed Description

Delphi ES10290 is engineered as an OE-style replacement oxygen sensor for select BMW models from 1992 through 1995. It is designed for upstream, center-position use where accurate exhaust oxygen monitoring is critical to fuel control and emissions performance. Delphi’s 100 years of OE experience is reflected in the sensor design, helping maintain the signal quality expected by the engine control system. This part cross-references Bosch (e.g., 13108, 13231) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle or inconsistent air-fuel control
• Reduced fuel economy caused by inaccurate exhaust feedback
• Failed emissions testing tied to sensor response issues
• Slow sensor warm-up on heated sensor applications

Installation Notes and Tips

Verify the vehicle’s application tab before ordering, since position-specific fitment matters. This sensor uses a 4-wire, round-connector configuration with an 18 x 1.5 mm thread size, so confirm connector style and exhaust bung dimensions before installation. For body fitment, use the exact vehicle listing: Fits 1992-1995 BMW 318i, N/A; Fits 1992-1995 BMW 318is, N/A; Fits 1995 BMW 318ti, N/A; Fits 1994-1995 BMW 325i, N/A; Fits 1994-1995 BMW 325is, N/A; Fits 1992 BMW 325is, N/A; Fits 1995 BMW M3, N/A; Fits 1994 BMW 530i, N/A, To 06/1994; Fits 1994 BMW 840Ci, N/A, To 05/1994.

Quality Assurance

Delphi builds this oxygen sensor using OE heritage and application knowledge developed through long-term supplier experience with major automakers. The ES10290 is intended to meet the fit and functional expectations of the listed BMW applications.