HomeEmission Control > SensorsSpectra OS5129 Oxygen Sensor - Downstream or Upstream
Part #: OS5129

Spectra OS5129 Oxygen Sensor - Downstream or Upstream

Upstream
25 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Geo and Toyota, Prizm, Celica, Corolla, Paseo, Previa, and Tercel
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Reliable Oxygen Sensor for Geo and Toyota Vehicles

The Spectra OS5129 oxygen sensor is designed to provide accurate emissions monitoring for select Geo and Toyota models. This sensor helps maintain optimal engine performance and ensures compliance with emission standards.

  • Compatible with Geo Celica, Prizm, Paseo, and Tercel models
  • Fits Toyota Corolla and Previa vehicles
  • Direct replacement oxygen sensor for emission control systems
  • Part number OS5129 for precise identification
  • Manufactured by Spectra for consistent quality

Product Overview and Compatibility

The Spectra OS5129 oxygen sensor is engineered to work seamlessly with specific Geo and Toyota vehicles, including the Celica, Corolla, Paseo, Previa, Prizm, and Tercel. This sensor monitors the oxygen levels in the exhaust gases, providing critical data to the engine control unit (ECU) to optimize fuel mixture and reduce emissions. Using the correct oxygen sensor like the OS5129 ensures your vehicle’s emission system functions properly and helps maintain fuel efficiency.

Common Applications and Issues Addressed

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

Installation Notes and Tips

When installing the Spectra OS5129 oxygen sensor, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket for proper removal and installation. Verify the sensor connector matches the vehicle’s wiring harness to prevent electrical issues. It is recommended to check for exhaust leaks before installation to ensure accurate sensor readings.

Quality Assurance and Warranty

Manufactured by Spectra, the OS5129 oxygen sensor meets industry standards for emission control components. While specific warranty details may vary, Spectra products typically come with a limited warranty covering defects in materials and workmanship. Always consult the product documentation or supplier for exact warranty terms.

This part fits 25 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1995GeoPrizm1.6LL4UpstreamFor vehicles with Federal Emissions.
1995ToyotaCelica1.8LL4Downstream
1995ToyotaCorolla1.6LL4UpstreamFor vehicles with Federal Emissions.
1995ToyotaPaseo1.5LL4UpstreamFor vehicles with Federal Emissions.
1995ToyotaPrevia2.4LL4Downstream
1994GeoPrizm1.8LL4UpstreamFor vehicles with Federal Emissions.
1994GeoPrizm1.6LL4UpstreamFor vehicles with Federal Emissions.
1994ToyotaCelica1.8LL4Downstream
1994ToyotaCorolla1.8LL4UpstreamFor vehicles with Federal Emissions.
1994ToyotaCorolla1.6LL4UpstreamFor vehicles with Federal Emissions.
1994ToyotaPaseo1.5LL4Upstream
1994ToyotaPrevia2.4LL4Downstream
1994ToyotaTercel1.5LL4Upstream
1993GeoPrizm1.8LL4UpstreamFor vehicles with Federal Emissions.
1993GeoPrizm1.6LL4UpstreamFor vehicles with Federal Emissions.
1993ToyotaCorolla1.8LL4UpstreamFor vehicles with Federal Emissions.
1993ToyotaCorolla1.6LL4UpstreamFor vehicles with Federal Emissions.
1993ToyotaPaseo1.5LL4Upstream
1993ToyotaPrevia2.4LL4Downstream
1993ToyotaTercel1.5LL4Upstream
1992ToyotaPaseo1.5LL4Upstream
1992ToyotaPrevia2.4LL4Downstream
1992ToyotaTercel1.5LL4Upstream
1991ToyotaPrevia2.4LL4Downstream
1991ToyotaTercel1.5LL4Upstream

* 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:

120011201012011122011346413533213121321315212342052245115S33605S39565S3967751561894651940589465195358946529415894652974594854938ES10303ES10305ES10318OS593OS595OS620SG355SG355TSG361SG361TSG81SG81TSU460SU4826SU4863

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