VP Water Pump Pulley

[Hvymtl]

I'm having a hard time finding a replacement 2 groove water pump pulley for my 1999 VP 305 GM engine.

Mine is a two groove and measures 7.25 in diameter and is 3 inches deep. Could I go to an aftermarket that measures 6.50 in diameter and just change the belts or will this affect cooling too much, or any idea where to find a new or used one that isn't 120.00???

 

[bruceb58]

Re: VP Water Pump Pulley

Assuming this is the correct part number, here is one. The new part #3852220 replaces the one in the auction.
OMC Cobra Stern Drive 4CY Alternator Belt Pulley 384104 | eBay

The shipping kills the deal probably.

Going to a smaller one will make the pump spin faster. Not sure what will happen if you do that.

 

[dypcdiver]

Re: VP Water Pump Pulley

Do you mean the raw water pump or the circulating pump? If it is the raw water then it comes as part of a new pump and you might find someone who has replaced their pump and has one hanging around.
I see it is 3" deep so assume it is not the raw water. Info might help someone else.

 

[Hvymtl]

Re: VP Water Pump Pulley

Do you mean the raw water pump or the circulating pump? If it is the raw water then it comes as part of a new pump and you might find someone who has replaced their pump and has one hanging around.
I see it is 3" deep so assume it is not the raw water. Info might help someone else.

It is the pulley the water pump not the crankshaft

 

[Hvymtl]

Re: VP Water Pump Pulley

That one is a single pulley - I need a dual. Sorta hard to find.

 

[bruceb58]

Re: VP Water Pump Pulley

That one is a single pulley - I need a dual. Sorta hard to find.

The one I showed should be a double. You can ask the seller to know for sure.