Alternator Replacement
TECH Fanatic
Joined: Jul 2022
Posts: 1,035
Likes: 390
From: Alaska
4 pin regulator, 145 amp # 8292
stock pulley, they normally push 120 amps at idle speed.
I like to upsize alternator pulley to 68 mm diameter, slows the rotor down a bit.
Still good for 100 amps at low idle.
.
If weight is paramount, and you are not running rear heat, seat heat, snow plow, etc. the # 8247 is rated 105 amps has same 4 pin regulator, same mount pattern and works just fine.
stock pulley, they normally push 120 amps at idle speed.
I like to upsize alternator pulley to 68 mm diameter, slows the rotor down a bit.
Still good for 100 amps at low idle.
.
If weight is paramount, and you are not running rear heat, seat heat, snow plow, etc. the # 8247 is rated 105 amps has same 4 pin regulator, same mount pattern and works just fine.
Joined: Nov 2001
Posts: 34,631
Likes: 2,553
From: Schiller Park, ILL Member: #317
Looks like the current Powermaster replacement part number is 48242 (165amp). Many years ago, I remember them listing the 48206 as a stock replacement for this application, I think it still fits but doesn't have the air duct on the back. I don't think the 48242 was even offered at that time.
