Upstream Oxygen Sensor for 1998-1999 Subaru Impreza

Includes:
- Upstream Oxygen Sensor

Fits Models:
- Subaru Impreza

Model Years:
- 1998–1999

Submodels:
- Common trims include L, Outback Sport, RS; chassis codes include GC8; body styles are sedan and coupe.

Engine Options:
- Common engine sizes include 2.2L (EJ22) and 2.5L (EJ25).

Description:
This upstream oxygen sensor is designed for the 1998–1999 Subaru Impreza, ensuring optimal engine performance and fuel efficiency. It monitors the level of oxygen in the exhaust gases, allowing the engine control unit to adjust the air-fuel mixture for improved combustion.

Features:
- Direct fit replacement for easy installation
- Enhances fuel efficiency and reduces emissions
- Durable construction for long-lasting performance
- Compatible with both 2.2L and 2.5L engine options
- Meets or exceeds OEM specifications for quality assurance