Buy 2004 Subaru Legacy Key Kit. Door Lock Cylinder If your keys don't turn in your door, you might Door, LOCK, Cylinder - OEM Subaru Part # 57491AE20B (57491AE20A, 57491AE84A)

KEY KIT Door Lock CylinderIgnition Lock Assembly

Fits Legacy, 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 Legacy.