Delphi ES10465 Oxygen Sensor

Delphi ES10465 Oxygen Sensor Overview

The Delphi ES10465 is a non-heated oxygen sensor built for upstream exhaust monitoring on select Mazda applications. It uses a 2-wire design with a square connector and 18 x 1.5 mm thread size, making it a direct-fit option for 1990-1993 Mazda B2200 and 1989-1993 Mazda B2600 models.

Backed by Delphi’s OE heritage and decades of supplier experience, this oxygen sensor is built with the same application knowledge that supports original equipment development. The Delphi ES10465 is a practical replacement for drivers searching for a Mazda B2200 oxygen sensor or Mazda B2600 upstream O2 sensor by part number.

Key Features

• Non-heated oxygen sensor for upstream exhaust placement
• 2-wire sensor design with square connector
• 18 x 1.5 mm thread size for proper exhaust manifold fitment
• Overall length: 1110.0
• Includes oxygen sensor and instruction sheet
• Direct replacement for Delphi ES10465 applications

Detailed Description

The Delphi ES10465 monitors exhaust oxygen content upstream of the catalytic converter, helping the engine control system maintain proper air-fuel management. It is engineered for confirmed fitment on 1990-1993 Mazda B2200 and 1989-1993 Mazda B2600 models, making it a focused solution for owners looking for a Mazda B2200 upstream oxygen sensor or a Mazda B2600 oxygen sensor replacement. Delphi’s OE background informs the design and application coverage of this part number, ES10465.

This part cross-references Bosch 12019 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect fuel mixture readings from a worn upstream sensor
• Rough idle or drivability concerns tied to exhaust feedback
• Reduced engine efficiency caused by inaccurate exhaust oxygen data
• Failed emissions testing linked to sensor degradation

Installation Notes and Tips

Verify the connector shape, wire count, thread size, and upstream position before installation. Confirm the exhaust bung is clean and the sensor threads match 18 x 1.5 mm. Use the included instruction sheet during installation and route the harness away from heat and moving components.

Quality Assurance

Delphi builds this oxygen sensor with OE-focused engineering knowledge drawn from more than 100 years of original equipment experience and supplier relationships with major automakers. That background supports consistent fitment and application-specific design for the ES10465.