I'm converting my engines from v-belt to 6-rib serpentine, and I'm not willing to pay the huge $$ that Hardin, Zoops, March, and everyone else seems to want for billet P/S pulleys. Does anyone know the part number for a stock GM pulley, roughly 5-3/4" in diameter? It's a press fit for a Type 2 (remote reservoir) pump. The offset is not a big deal - I'm planning on making brackets myself anyway.

Thanks!

i used a 99 mercrruiser 502 as a model for serpentine system ,you can view it at mercruiserparts.com

Very nice. Do you have a part number for the P/S pulley? My pump has a .685" shaft; no keyway.

try this !
http://www.mercruiserparts.com/Show_...ING+COMPONENTS

I used a Dorman pulley on mine. They have pics and dimensions on their website. The one I needed was a in stock part at a small town Carquest store. It was under $20.

Thanks, guys. I'm not sure the Merc pulley will work on my pump (and I could get a billet one for only a few $ more...). Looks like the Dorman #300-126 might be the ticket - 5 3/4" diameter, .661 bore and less than $25!