Biohazard
I searched well beyond just FABO to arrive at my conclusion. There was a lot of fog surrounding the 6-blade vs. 8-blade pumps from the factory but, unless you are using strictly OEM/original pumps...I feel this is a non-issue. Good luck even finding an aftermarket replacement pump with only 6 blades on the impeller.
I pulled mine off this morning to look at it's build quality (Gates) and, if available, I would buy another Gates pump...just not this part number.