HomeEmission Control > SensorsDelphi ES10951 Oxygen Sensor
Part #: ES10951

Delphi ES10951 Oxygen Sensor

4 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, Miata
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Delphi ES10951 Oxygen Sensor Overview

The Delphi ES10951 oxygen sensor is designed for precise emission control in Mazda Miata vehicles. This non-heated sensor features a single wire and a square connector shape, ensuring reliable performance in front-position applications.

  • Non-heated oxygen sensor type for accurate air-fuel mixture readings
  • Single wire design simplifies installation and wiring
  • Square connector shape for secure and proper fitment
  • Thread size of 18 x 1.5 mm compatible with front sensor ports
  • Overall length of 555.0 mm to reach designated mounting points
  • Includes oxygen sensor and instruction sheet for guidance

Detailed Product Description

The Delphi ES10951 oxygen sensor is engineered to monitor exhaust gases in Mazda Miata models, providing essential data to the engine control unit (ECU) for optimal combustion and emissions management. Its non-heated sensor type relies on exhaust heat to reach operating temperature, suitable for front-position installation where exhaust temperatures are sufficient. The single wire configuration reduces complexity while maintaining accurate sensor output. The square connector shape ensures a secure electrical connection, minimizing the risk of disconnection or signal loss. With a thread size of 18 x 1.5 mm and an overall length of 555.0 mm, this sensor fits precisely in the front exhaust port of compatible Mazda Miata vehicles.

Common Applications and Issues Addressed

  • Helps resolve rough idling caused by incorrect air-fuel mixture readings
  • Reduces increased emissions by providing accurate oxygen level data
  • Addresses poor fuel economy linked to faulty oxygen sensors
  • Prevents check engine light triggers related to sensor malfunctions
  • Supports proper catalytic converter function by monitoring exhaust gases

Installation Notes and Tips

When installing the Delphi ES10951 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct 18 x 1.5 mm thread size to avoid cross-threading. Verify the square connector aligns properly with the vehicle’s wiring harness for a secure fit. Follow the included instruction sheet for torque specifications and sensor orientation. It is recommended to inspect the wiring and connector for damage before installation to ensure optimal sensor performance.

Quality Assurance and Warranty

Delphi manufactures the ES10951 oxygen sensor to meet OEM standards for durability and accuracy. While specific warranty details are not provided here, Delphi products typically come with a limited warranty covering defects in materials and workmanship. For warranty information, refer to the product documentation or contact the manufacturer directly.

BrandDelphi
Part NumberES10951
Sensor TypeNon heated
Wire Quantity1
Connector ShapeSquare
Thread Size18 x 1.5 mm
Overall Length555.0
Package ContentsOxygen sensor, instruction sheet
Position(s)Front

This part fits 4 vehicles. Search below:

YearMakeModelPositionNotes
1993MazdaMiataN/Awith 555mm Overall Length
1992MazdaMiataN/Awith 555mm Overall Length
1991MazdaMiataN/Awith 555mm Overall Length
1990MazdaMiataN/Awith 555mm Overall Length

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

121132131193234-10242417625021035B61R-18-861B61R-18-861AB61R-18-861A9UOS2074OS700REA1460SG649SU4625

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.