Wilo 2708307 ECS24-15.50 115-volt Sump/Effluent Pump

Purchased the pump, installed in sump. The four stainless steel bolts that secure the pump motor - impeller assembly to the foot base corroded beyond safe operation. All i wanted to do is replace the four bolts. After 4 hours and six phone numbers, I still have had no luck finding the parts to replace four simple bolts. The pump and motor still perform great. The hold up is four stainless bolts. This company has no parts dept one phone call , leads to five " pass" off phone calls. I donot recommend this pump as the company doesnot back up this product. I suggest buying a Zoeller, great outfit to deal with.