Delphi ES10353 Oxygen Sensor

Delphi ES10353 Oxygen Sensor for BMW

The Delphi ES10353 is a heated front oxygen sensor built for precise exhaust feedback and reliable engine management. It combines OE heritage with application-specific fitment for select BMW 530i, 540i, 740i, 740iL, and 840Ci models from 1994-1995.

Key Features

• Heated oxygen sensor for faster operating temperature and stable signal output
• 4-wire design for modern sensor signal and heater circuit operation
• Round connector shape for direct-fit electrical connection
• 18 x 1.5 mm thread size for proper exhaust bung fitment
• 360.0 overall length for the specified front sensor application
• Includes oxygen sensor and instruction sheet
• Delphi ES10353 engineered with OE experience and aftermarket application knowledge

Detailed Description

Delphi ES10353 is a front heated oxygen sensor for select BMW applications, including the 1994-1995 BMW 530i, 540i, 740i, 740iL, and 840Ci. As an emission control sensor, it monitors exhaust oxygen content so the engine control system can adjust fuel delivery and maintain proper air-fuel balance. Delphi’s OE background is reflected in the sensor design, helping support accurate signal response and dependable replacement performance. This part cross-references Bosch 13453 and DENSO Auto Parts 234-4671 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle caused by inaccurate exhaust feedback
• Reduced fuel economy from incorrect air-fuel correction
• Emissions test failures tied to a worn front sensor
• Slow sensor response during warm-up or normal driving

Installation Notes and Tips

Verify the front sensor location and thread size before installation. Inspect the exhaust bung threads and wiring routing, and compare the connector shape and wire count to the original sensor. For BMW 530i, 540i, 740i, 740iL, and 840Ci applications, confirm the vehicle build date notes shown in fitment: 1994 BMW 530i from 06/1994, 1994 BMW 540i from 03/1994, and 1994 BMW 840Ci from 05/1994. Use the included instruction sheet during installation and clear diagnostic codes after replacement if required.

Quality Assurance

Delphi draws on 100 years of OE experience and supplier knowledge from top automakers, with OE heritage built into its aftermarket parts. That background supports consistent fitment and sensor construction for emission control service on BMW applications.