Replacement alternator
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Tuned
Joined: Oct 2009
Posts: 425
Likes: 4
Replacement alternator
looking on line at 2004 F-250 6.0L single alternators are listed as; 137mm and 148mm diameter. Does it matter which diameter is choosen when replaceing?
Duals sometimes don't state diameter. Higher amps can be had on upper dual for same price as single. Is dual upper clocked different and/or otherwise different to single? Two sellers I called were unsure about difference so they recommend strictly adheareing to specs of old unit.
Thanks for insight on this.
Duals sometimes don't state diameter. Higher amps can be had on upper dual for same price as single. Is dual upper clocked different and/or otherwise different to single? Two sellers I called were unsure about difference so they recommend strictly adheareing to specs of old unit.
Thanks for insight on this.
Lead Driver
Joined: Dec 2006
Posts: 6,496
Likes: 94
From: So. Jersey
Short and simply, buy the largest amp alternator you can afford. The dual alternator top is a higher amp than the single alt. on the older trucks.
Many people like the nation wide warranty replacement so they go with one from a large chain store like Advance Auto or Autozone. All the mounting is the same so a 2007 alt. will fit your 2004.
Another option in the 230 amp Leece-Neville which can be pricey. Do a search on this forum as there are threads available with tons of detailed info & deals.
Many people like the nation wide warranty replacement so they go with one from a large chain store like Advance Auto or Autozone. All the mounting is the same so a 2007 alt. will fit your 2004.
Another option in the 230 amp Leece-Neville which can be pricey. Do a search on this forum as there are threads available with tons of detailed info & deals.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
Likes: 549
From: Spanaway
Also with the upper dual alt you can change the pully to a smaller
one and start getting charging power a bit sooner over the stock size.
You can pick up the smaller pulley on Ebay.
Here is a good thread on the topic.
https://www.ford-trucks.com/forums/1...o-replace.html
one and start getting charging power a bit sooner over the stock size.
You can pick up the smaller pulley on Ebay.
Here is a good thread on the topic.
https://www.ford-trucks.com/forums/1...o-replace.html
Tuned
Joined: Nov 2005
Posts: 294
Likes: 24
From: Double Oak, TX
This topic has been discussed, argued and fought over infinitum on this forum over the years. if you have minimal needs like I do, try the Bosch AL7606N New Alternator on Amazon for $153. Mine came with a lifetime guarantee with no core requirement. Save your old one for a spare. This is a simple plug and play unit that is rated at 135-140 amps.
Do a search on this site including my post for more information. Good luck.
Do a search on this site including my post for more information. Good luck.
Laughing Gas
Joined: Jan 2007
Posts: 883
Likes: 5
Only drawback to online purchases is shipping back and forth for warranty, or buy from one of the big box stores and get coverage from all over the country 7 days a week and some till 9pm almost every small town has one,but if you can haul a spare around thats even faster yet and a good alternative also,but try to get a min 140a and maybe a small pulley off ebay.
Tuned
Joined: Nov 2005
Posts: 294
Likes: 24
From: Double Oak, TX
Good point on how to get warranty service on a new Bosch. I called Bosch and they told me I could take it to any retailer that sold Bosch and they would do an exchange. I asked if that included NAPA. Bosch said yes. Have I needed to do this? No but as pointed out by Jack, over the years I have done plenty rebuilt alternator exchanges with Autozone on other vehicles. My real safety net is the original Ford alternator that I carry in the trailer. I would use it until I could get to a Bosch dealer.
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Laughing Gas
Joined: Jan 2007
Posts: 883
Likes: 5
This topic has been discussed, argued and fought over infinitum on this forum over the years. if you have minimal needs like I do, try the Bosch AL7606N New Alternator on Amazon for $153. Mine came with a lifetime guarantee with no core requirement. Save your old one for a spare. This is a simple plug and play unit that is rated at 135-140 amps.
Do a search on this site including my post for more information. Good luck.
Do a search on this site including my post for more information. Good luck.
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Tuned
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Hotshot
Joined: Dec 2014
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From: Jersey Shore
When I get my engine back together again I'll let you know. I did it cold, but not fully hot.
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