Spectra OS5141 Oxygen Sensor - Downstream, Downstream Front or Upstream

Spectra OS5141 Oxygen Sensor

The Spectra OS5141 oxygen sensor is an OE-style emission control replacement for select Mazda and Ford applications. It is built to match original equipment performance targets for accurate exhaust monitoring and dependable engine management.

• Direct replacement oxygen sensor for emission control service
• Compatible with select Mazda Millenia, Mazda 626, Mazda MX-6, and Ford Probe applications
• Supports upstream and downstream sensor locations, depending on vehicle application
• Engineered to meet or exceed original equipment performance expectations
• Part number: OS5141

Fitment Details

• Fits 2001-2002 Mazda Millenia, downstream front.
• Fits 1995-1996 Mazda Millenia, downstream front.
• Fits 1997-2000 Mazda Millenia, upstream, front manifold installation location.
• Fits 1998-1999 Mazda 626, upstream, for vehicles with Federal Emissions.
• Fits 1996-1997 Ford Probe, downstream.
• Fits 1996-1997 Mazda 626, downstream.
• Fits 1996-1997 Mazda MX-6, downstream.

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings
• Reduced fuel control accuracy from a worn sensor
• Emission test failures tied to sensor response issues
• Driveability concerns caused by aging exhaust feedback components

Installation Notes

Verify the sensor position before ordering, since this part is used in upstream and downstream locations across different applications. On 1997-2000 Mazda Millenia, the fitment notes specify front manifold installation location. On 1998-1999 Mazda 626, fitment is limited to Federal Emissions vehicles.

Quality Assurance

Spectra Premium states that its engineering, manufacturing process, and quality control are used to produce oxygen sensors that meet or exceed the performance of the original equipment they replace. This part cross-references Gates (e.g., 22098) for the same application.