I need a name or part number for the pulley directly under the alternator. It is 70mm in diameter . The bearings seized up and I can't identify the part.

 

 

Its #9 but the only on the store has is 90mm in diameter

 

Looks like Atlantic has both an 80mm and 90mm listed for the DII.

To be honest though, as long as it doesn't hit anything, it shouldn't matter. It'll only push your belt in 5mm which would just be made up for in your tensioner. It isn't driving anything so other than physical space constraints the speed it spins does not matter, the belt will go the same speed as the crankpulley.

 

Is there a part number I can get? I'm on my phone over at the part store

 

Which store? I'll start looking them up for you

 

o reilly auto parts

 

Not sure they have one....

Their website is saying the Gates 36102 matches the Dayco 89054 but the outer diameter is 100mm.

 

Gah I need this thing asap >.< any chance auto zone as something?

 

The Dayco pulley 89054 is showing as 90mm OD 17mm ID with 7 groove on Dayco's website. That gates number is showing for a disco in this auction:
Gates 36102 Belt Tensioner Pulley | eBay

I say try it. If anything have them pull it off the shelf and measure the outer diameter with some calipers. Most auto parts stores have them behind the counter to use.