Substitute for part 862583

cshay

Recruit
Joined
Jun 8, 2022
Messages
4
We are having our mercruiser 496 rebuilt and after much work (and a lot of money) mechanic now tells us that he can't get a part - 862583 (pulley for circulating pump) . No longer made and can't find a new or used one anywhere, so we are now at a complete standstill. Does anyone know if there is a substitute part that will work?
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,291
the pully was made for a gm motor not mercruiser. Looks like a serpentine belt application
 

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
 

tpenfield

Moderator
Staff member
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Jul 18, 2011
Messages
18,040
Welcome to iBoats . . .

A couple of questions . . .

Why does the water pump pulley need to be replaced ( need or just a desire ?)

Is there a GM part number stamped somewhere on the part?

As mentioned, the engine is a GM 496/8.1 and many of the parts are GM.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
Staff member
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Jul 23, 2011
Messages
49,540
unless the pulley was smashed beyond use, use the pulley you have.

if it shows a bit of rust, wire brush and spray with paint
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
37,818
Have your local machine shop make one.-----Invested hundreds in a rebuild.-----Making a pulley is priceless !
 

cshay

Recruit
Joined
Jun 8, 2022
Messages
4
tried to order from marinepartsguys.com. Took my money and sent an email saying order was being processed......and that was it. Don't answer phone or respond to email. I think it is a scam.
 

Bt Doctur

Supreme Mariner
Joined
Aug 29, 2004
Messages
19,291
pretty sure BB and SB circ pumps use the same pully.
 
Last edited by a moderator:

achris

More fish than mountain goat
Joined
May 19, 2004
Messages
27,468
tried to order from marinepartsguys.com. Took my money and sent an email saying order was being processed......and that was it. Don't answer phone or respond to email. I think it is a scam.
Oh dear. So sorry about that. I hope you cancelled the payment through the credit card company.
 
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