Throttle Position Sensor is a direct fit for the following:

1999-2001 Subaru Impreza 2.2L
2002-2005 Subaru Impreza WRX

1999-2002, 2005 Subaru Legacy 2.2L & 2.5L

2000-2002 Subaru Outback 2.5L

Genuine Subaru Part Number: 22633AA210