Buy 2004 Subaru STI Key Kit SMART. Door Lock Cylinder If your keys don't turn in your door, you might Door, Lock, Cylinder - OEM Subaru Part # 57411AL00A

KEY KIT Door Lock CylinderIgnition Lock Assembly

Fits Impreza, Outback

Door Lock Cylinder
If your keys don't turn in your door, you might need to replace the door lock cylinder in your 2004 Subaru STI.