Warranty is 2 years. Such damage is generallly caused by shipping, the bush bearing slipping is a frequent occurence and the cause of most noise complaints on a new pump, probably this happens to 10% of pumps in shipping. The magnet cracking would have been caused by manufacturing but the stress of transport made it crack, basically it got too hot when they made it and it had fractures and being jossled/heated in shipping broke it.