Ok, I am also trying to sort all of this information out. I am leaning towards the purchase of the Bosch pump as it will be the most direct fit/replacement. After seeing RL67037's post on the Bosch 010 pump I am gearing towards that one on Amazon. However, on Amazon (part# Bosch 0 392 022 010) is referenced as an auxiliary water pump. These are two different pumps (intercooler vs auxiliary water pump)??? The (part# Bosch 0 392 022 002) is listed as an intercooler pump. Just looking for some clarification.