HomeEmission Control > SensorsSpectra OS5181 Oxygen Sensor - Upstream, Upstream Front or Upstream Right
Part #: OS5181

Spectra OS5181 Oxygen Sensor - Upstream, Upstream Front or Upstream Right

Upstream Front
9 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$24.02Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, MPV
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Oxygen Sensor for Mazda MPV Vehicles

The Spectra OS5181 oxygen sensor is designed specifically for Mazda MPV 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 MPV vehicles
  • Part number OS5181 for precise identification
  • Designed for emission control sensor replacement
  • Ensures accurate oxygen level readings for engine management
  • Durable construction for long-lasting performance

Product Details and Functionality

The Spectra OS5181 oxygen sensor is an essential component in the emission control system of Mazda MPV vehicles. It measures the oxygen content 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, improving fuel efficiency and reducing harmful emissions. The sensor is engineered to meet OEM specifications, providing reliable and consistent performance throughout its service life.

Common Applications and Problem Resolution

  • Helps resolve rough idling and engine hesitation
  • Addresses increased fuel consumption issues
  • Reduces exhaust emissions to meet regulatory standards
  • Prevents check engine light activation related to oxygen sensor faults
  • Improves overall engine responsiveness and performance

Installation Notes and Tips

When installing the Spectra OS5181 oxygen sensor on a Mazda MPV, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor carefully to prevent damage to the exhaust manifold or wiring. It is recommended to apply anti-seize compound on the sensor threads before installation to facilitate future removal. After installation, clear any diagnostic trouble codes and verify sensor operation with a scan tool.

Quality Assurance and Warranty Information

Spectra provides this oxygen sensor with quality assurance to meet industry standards for emission control components. The OS5181 part number is manufactured to deliver consistent performance and durability. Warranty coverage details should be confirmed at the point of purchase, ensuring protection against manufacturing defects.

This part fits 9 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2006MazdaMPV3.0LV6Upstream Front
2005MazdaMPV3.0LV6Upstream Front
2004MazdaMPV3.0LV6Upstream Front
2003MazdaMPV3.0LV6Upstream Front
2002MazdaMPV3.0LV6Upstream Front
2001MazdaMPV2.5LV6Upstream RightCalifornia emissions vehicles only.
2001MazdaMPV2.5LV6UpstreamLocated In RH Manifold; w/ Federal Emissions
2000MazdaMPV2.5LV6Upstream RightCalifornia emissions vehicles only.
2000MazdaMPV2.5LV6UpstreamLocated In RH Manifold; w/ Federal Emissions

* 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:

15256153142253223447255S42515S9996752516AJ5118861AJ51188619UAJ9518861AJ95188619UAJ9518861CAES20144GY0318861AGY0318861BGY0318861B9UGY0318861BCAOS1817OS1853SG1063SG1063TSG1099SG1099TSU11449SU6279

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