Im doing the m54 water pump replacement today on my 05 3.0i and temporarily reusing my old pulley for it. I ordered the rein aluminum pulley replacement for the water pump too.

Other than the potential for corrosion of the plastic pulleys, is there any benefit to running the aluminum one? And this one looks so pretty, are there other aluminum pulleys I can order? Like for the tensioner/idler

Thanks. It's 20 degrees in Austin and I gotta work on this shit today with like 4 layers and gloves. I couldn't get the tensioner to release yesterday but I think I didn't give it enough beans in the cold maybe.