Engine "reconditioned" by Porsche

[willw]

Hi all,

I just bought a 2001 Boxster S. I really like this thing. I got many service records with the car. The engine was replaced under warranty in 2005 because of oil in the coolant. I guess it was one of the porous blocks that got through.

My question is about the replacement engine, which is referred to on the dealer work order as "reconditioned". It has the AT in the engine number, meaning (the way I understand it) that Porsche did the rebuild.

Does anyone know how much was done to these motors by Porsche? Were they rebuilt from stem to stern, or did they just fix whatever problem(s) the engine had?

I can't find any info on these engines. Any insight will be much appreciated.