Delphi ES10222 Oxygen Sensor

Delphi ES10222 Oxygen Sensor for Mazda B2000/B2200

The Delphi ES10222 is a non-heated upstream oxygen sensor built for specific Mazda truck applications. It uses a single-wire design with a square connector and 18 x 1.5 mm thread size, making it a direct-fit emission control replacement for the listed vehicles.

Key Features

• Non-heated oxygen sensor for upstream placement
• Single-wire configuration with square connector
• 18 x 1.5 mm thread size for proper exhaust fitment
• Overall length: 1060.0
• Includes oxygen sensor and instruction sheet
• Delphi ES10222 built with OE heritage and supplier experience

Detailed Description

Delphi ES10222 is an emission control oxygen sensor engineered for upstream exhaust monitoring on 1986-1987 Mazda B2000 and 1987-1993 Mazda B2200 models. As an OE-style replacement, it reflects Delphi’s long history supplying components to major automakers and brings that manufacturing knowledge into the aftermarket. If you are replacing a worn sensor on a Mazda B2000 or Mazda B2200, this part number ES10222 provides the correct connector style, thread size, and non-heated sensor design for the listed applications.

This part cross-references Bosch 12203 for the same application.

What It Helps Address

• Check engine light caused by a failing upstream oxygen sensor
• Incorrect air-fuel feedback from an aging sensor
• Rough idle or drivability issues tied to exhaust sensor wear
• Reduced fuel control accuracy in Mazda B2000 and Mazda B2200 applications
• Emission control faults related to sensor response degradation

Installation Notes and Tips

Verify the upstream sensor location before installation and confirm the square connector matches the vehicle harness. Check thread condition in the exhaust bung and compare the overall length and wire routing to the original sensor before tightening. For best results, inspect nearby exhaust components for leaks that can affect sensor readings.

Quality Assurance

Delphi builds this oxygen sensor using OE heritage and knowledge developed through more than 100 years of original-equipment experience. That background supports consistent fitment and construction for the specified Mazda B2000 and Mazda B2200 applications.