HomeEmission Control > SensorsSpectra OS5398 Oxygen Sensor - Upstream
Part #: OS5398

Spectra OS5398 Oxygen Sensor - Upstream

Upstream
6 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Acura and Honda, EL and Civic
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Reliable Oxygen Sensor for Acura Civic and Honda EL

The Spectra OS5398 oxygen sensor is designed specifically for emission control systems in Acura and Honda vehicles, including the Civic and EL models. This sensor helps maintain optimal engine performance and emissions compliance by accurately monitoring oxygen levels in the exhaust gases.

  • Compatible with Acura Civic and Honda EL models
  • Part number OS5398 for precise identification
  • Designed for emission control sensor replacement
  • Ensures accurate air-fuel mixture readings
  • Durable construction for long-term use

Product Details and Compatibility

The Spectra OS5398 oxygen sensor is engineered to meet the specifications required by Acura and Honda vehicles, particularly the Civic and EL models. This sensor plays a critical role in the vehicle’s emission control system by measuring the oxygen content in the exhaust stream. The data collected by the sensor is used by the engine control unit (ECU) to adjust the air-fuel ratio, which helps optimize fuel efficiency and reduce harmful emissions. Using the correct part number OS5398 ensures proper fitment and function within the emission system.

Common Applications and Issues Addressed

  • Helps resolve rough idling and engine hesitation
  • Reduces increased fuel consumption caused by faulty sensors
  • Prevents emission test failures due to inaccurate oxygen readings
  • Addresses check engine light triggers related to oxygen sensor faults
  • Improves overall engine performance and exhaust quality

Installation Notes and Tips

When installing the Spectra OS5398 oxygen sensor on Acura Civic or Honda EL models, 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 proper sensor operation with a scan tool.

Quality Assurance and Warranty

Spectra manufactures the OS5398 oxygen sensor to meet OEM standards for durability and performance. While specific warranty details may vary, Spectra typically offers coverage against defects in materials and workmanship. Using the correct part number OS5398 guarantees compatibility and helps maintain the emission control integrity of Acura Civic and Honda EL vehicles.

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2003AcuraEL1.7LL4Upstream
2003HondaCivic1.7LL4Upstream
2002AcuraEL1.7LL4Upstream
2002HondaCivic1.7LL4Upstream
2001AcuraEL1.7LL4Upstream
2001HondaCivic1.7LL4Upstream

* 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:

1353223441222429136531PLRA015S3414752192ES20215OS2030SG579SG579TSU5601

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