[68is4me]

I have never purchased from rock auto, but I am parts manager at a gm dealership and can give a little insight on the acdelco parts. About 5 years ago gm was getting out priced by aftermarket parts, so they came up with a great idea to offer different line's of acdelco parts to be competitive. The oem acdelco line which is the best, the professional line which is ok (I do sell a lot of parts in this line), and then they have the advantage line which is the lowest priced stuff you can get. The only parts I sell in the Advantage line are brake rotors because they are competitive with the aftermarket. The rest of the Advantage line I will not sell, it is almost a guarantee the it will come back.

So to the OP if you purchased the Acdelco advantage hose's. I will bet that they are the correct hose's.