HomeEmission Control > SensorsSpectra OS5365 Oxygen Sensor - Upstream
Part #: OS5365

Spectra OS5365 Oxygen Sensor - Upstream

Upstream
3 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, 626
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Reliable Oxygen Sensor for Mazda 626 Vehicles

The Spectra OS5365 oxygen sensor is designed specifically for Mazda 626 models, ensuring accurate emission control and optimal engine performance. This sensor helps maintain proper air-fuel mixture by monitoring exhaust gases, contributing to efficient fuel consumption and reduced emissions.

  • Compatible with Mazda 626 models
  • Part number OS5365 for precise identification
  • Designed to monitor oxygen levels in exhaust gases
  • Supports emission control system functionality
  • Durable construction for long-lasting performance

Product Details and Functionality

The Spectra OS5365 oxygen sensor plays a critical role in the emission control system of Mazda 626 vehicles. By measuring the oxygen content in the exhaust stream, it provides real-time data to the engine control unit (ECU). This data allows the ECU to adjust the air-fuel ratio for optimal combustion, which helps reduce harmful emissions and improve fuel efficiency. The sensor is engineered to meet OEM specifications, ensuring compatibility and reliable operation within the vehicle’s emission system.

Common Applications and Issues Addressed

  • Helps resolve rough idling caused by incorrect air-fuel mixture
  • Reduces engine hesitation and stalling issues
  • Prevents increased fuel consumption due to faulty sensor readings
  • Assists in passing emissions inspections by maintaining proper exhaust output
  • Mitigates check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Spectra OS5365 oxygen sensor on a Mazda 626, ensure the engine is cool to avoid burns. Use an oxygen sensor socket or appropriate wrench to remove the old sensor carefully. Apply anti-seize compound to the threads of the new sensor to facilitate future removal. Verify the sensor connector is securely attached to prevent signal interruptions. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.

Quality Assurance and Warranty

Spectra oxygen sensors are manufactured to meet strict quality standards, providing reliable performance for emission control systems. The OS5365 part number undergoes rigorous testing to ensure durability and accuracy. This product typically includes a limited warranty covering defects in materials and workmanship, offering peace of mind for Mazda 626 owners seeking dependable replacement parts.

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002Mazda6262.0LL4Upstream
2001Mazda6262.0LL4Upstream
2000Mazda6262.0LL4UpstreamCalifornia emissions vehicles only.

* 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:

1527821329292211423441265S3614752533ES10737ES20121FS1J18861FS1J18861AFS1J18861BOS2431SG983SG983TSU5252

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