HomeEmission Control > SensorsSpectra OS6290 Oxygen Sensor - Upstream Front
Part #: OS6290

Spectra OS6290 Oxygen Sensor - Upstream Front

Upstream Front
⚙️ 3 vehicles fit this part
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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 OS6290 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 OS6290 for precise identification
  • Direct replacement oxygen sensor for emission control systems
  • Durable construction for consistent sensor readings
  • Supports proper engine management and fuel efficiency

Product Details and Functionality

The Spectra OS6290 oxygen sensor is an essential component in the emission control system of Mazda 626 vehicles. It measures the oxygen levels in the exhaust gases and sends this data to the engine control unit (ECU). This information allows the ECU to adjust the air-fuel ratio for optimal combustion, reducing harmful emissions and improving engine performance. The sensor is engineered to meet OEM specifications, providing reliable operation and compatibility with the vehicle’s existing systems.

Common Applications and Problem Solving

  • Helps resolve rough idling and engine hesitation issues
  • Reduces increased fuel consumption caused by faulty sensors
  • Addresses check engine light triggers related to oxygen sensor faults
  • Improves emission test results by maintaining proper exhaust gas readings
  • Prevents damage to catalytic converters due to incorrect air-fuel mixture

Installation Notes and Tips

When installing the Spectra OS6290 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 if not pre-coated, but avoid contaminating the sensor tip. After installation, clear any diagnostic trouble codes and verify sensor operation with a scan tool to confirm proper function.

Quality Assurance and Warranty

Spectra parts are manufactured to meet or exceed industry standards for emission control components. The OS6290 oxygen sensor undergoes rigorous testing to ensure durability and accurate performance. This product includes a limited warranty covering defects in materials and workmanship, providing confidence in its reliability for Mazda 626 owners.

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002Mazda6262.5LV6Upstream Front
2001Mazda6262.5LV6Upstream Front
2000Mazda6262.5LV6Upstream FrontCalifornia 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:

153232211723441485S3647KLS218861KLS218861AKLS218861BKLS218861CSG993SU5796

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