HomeEmission Control > SensorsDelphi ES10146 Oxygen Sensor
Part #: ES10146

Delphi ES10146 Oxygen Sensor

31 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Kia, Ford, Mazda, and Mercury, Sephia, Escort, 323, Protege, Tracer, Festiva, and MX-3
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Delphi ES10146 Oxygen Sensor Overview

The Delphi ES10146 is a non-heated oxygen sensor designed for upstream installation. Engineered to meet the emission control requirements of select Ford, Kia, Mazda, and Mercury models, this sensor ensures accurate air-fuel mixture readings for optimal engine performance.

  • Non-heated oxygen sensor type
  • Single wire configuration for reliable signal transmission
  • Square connector shape for secure fitment
  • Thread size of 18 x 1.5 mm compatible with specified vehicles
  • Overall length of 480.0 mm for proper installation depth
  • Includes oxygen sensor and instruction sheet
  • Upstream position sensor for precise exhaust gas monitoring

Technical Details and Compatibility

The Delphi ES10146 oxygen sensor features a single-wire, non-heated design suitable for upstream placement in the exhaust system. Its 18 x 1.5 mm thread size and square connector shape ensure compatibility with various models including the Ford Escort, Mercury Tracer, Kia Sephia, Mazda MX-3, and others. The 480 mm overall length allows for proper installation depth, maintaining accurate sensor readings critical for emission control and engine management systems.

Compatible Vehicles and Applications

This oxygen sensor is compatible with multiple vehicle makes and models, including:

  • Ford Escort and Festiva
  • Kia Sephia
  • Mazda 323, MX-3, and Protege
  • Mercury Tracer

Part number ES10146 is specifically designed to meet the emission control sensor requirements for these vehicles, ensuring proper fit and function.

Common Issues Addressed by the Delphi ES10146 Oxygen Sensor

  • Incorrect air-fuel mixture readings causing poor fuel economy
  • Check engine light triggered by faulty oxygen sensor signals
  • Increased emissions due to sensor malfunction
  • Engine performance issues such as rough idling or hesitation
  • Failed emissions tests related to sensor failure

Installation Notes and Tips

When installing the Delphi ES10146 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the correct 18 x 1.5 mm thread size to avoid cross-threading. The square connector should be securely attached to prevent signal loss. Follow the included instruction sheet for torque specifications and sensor positioning. Proper installation in the upstream position is critical for accurate exhaust gas monitoring.

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for durability and performance. The ES10146 part number undergoes rigorous testing to ensure reliable operation in emission control systems. While specific warranty details may vary, Delphi typically offers coverage against manufacturing defects to provide confidence in product quality.

BrandDelphi
Part NumberES10146
Connector ShapeSquare
Overall Length480.0
Package ContentsOxygen Sensor, Instruction Sheet
Position(s)Upstream
Sensor TypeNon Heated
Thread Size18 x 1.5 mm
Wire Quantity1

This part fits 31 vehicles. Search below:

YearMakeModelSubmodelPositionNotes
1995KiaSephiaN/A
1994FordEscortN/A
1994KiaSephiaN/A
1994Mazda323BaseN/A
1994MazdaProtegeDXN/A
1994MazdaProtegeBaseN/A
1994MercuryTracerN/A
1993FordEscortN/A
1993FordFestivaN/A
1993Mazda323SEN/A
1993Mazda323BaseN/A
1993MazdaMX-3N/A
1993MazdaProtegeN/A
1993MercuryTracerN/Awith 480mm Overall Length
1992FordEscortN/A
1992FordFestivaN/A
1992Mazda323SEN/A
1992Mazda323BaseN/A
1992MazdaMX-3N/A
1992MazdaProtegeN/A
1992MercuryTracerN/Awith 480mm Overall Length
1991FordEscortN/A
1991FordFestivaN/A
1991Mazda323SEN/A
1991Mazda323BaseN/A
1991MazdaProtegeN/A
1991MercuryTracerN/A
1990FordFestivaN/A
1990Mazda323SEN/A
1990Mazda323BaseN/A
1990MazdaProtegeN/A

* 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:

12038138-142138-2082131173213127422043234-101024175250-21010250-21012B376-18-861B61R-18-861BBP03-18-861BP03-18-861ABP03-18-861BBP03-18-861B9UBPO318861B9UDY-628F0BZ 9F472-BF0BZ 9F472-CF0C6 9F472-EBF1CF 9F472-AF1CZ 9F472-AFOBZ 9F472-BMBP03-18-861BOS151OS634REA1133SG28SG97SU237

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