Spectra OS5381 Oxygen Sensor – Downstream or Upstream

Spectra OS5381 Oxygen Sensor

The Spectra OS5381 oxygen sensor is a direct-fit emission control replacement for select Mazda and Kia applications. It is built to match original equipment performance targets for accurate exhaust feedback and stable engine management.

• Oxygen sensor for emission control and air-fuel monitoring
• OE-style replacement for select Mazda Protege, Mazda MX-3, and Kia Sephia applications
• Supports upstream and downstream positions where listed
• Manufactured with quality control processes to meet or exceed OE replacement expectations
• Cross-references Bosch 13362 and Delphi ES10366 for the same application

Detailed Application Coverage

Compatible with 1995-1998 Mazda Protege, upstream; 1994-1996 Mazda MX-3, upstream; 1995-1996 Kia Sephia, upstream; and 1996 Kia Sephia, downstream. The Spectra OS5381 is also a fitment-based replacement for drivers searching for a Ma