https://www.subaru.com/my-subaru/warranties-2012.html
Here's the link for 2012 (couldn't find a 2013).....
Powertrain Coverage Components
Engine
Engine block and all internal parts
Cylinder heads and valve trains
Oil pump, oil pan
Timing belts or gears and cover
Water pump
Flywheel
Intake and exhaust manifolds
Oil seals and gaskets