Best replacement alternator? - Ford Powerstroke Diesel Forum
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post #1 of 13 Old 11-17-2011, 09:28 PM Thread Starter
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Best replacement alternator?

Well, tonight my truck's battery light started flickering and my voltage started fluctuating like crazy on the gauge, accessories started cutting out, etc. I pulled over right away, checked everything and I am pretty sure its the alternator. I just pulled it off, the batteries are pretty new I am hoping it didnt take them out with it.

I am going to go first thing and get the alternator tested, but it is currently a reman chinese piece of **** that was on the truck when I got it. Assuming it is the alternator, what are your suggestions for alternator?

Parts store chinese 110 amp stock replacement? parts store 120amp upgrade replacement? Should I see if the dealer has a better made option?

What about the USA made MEAN GREEN alternators found online? Any good/bad things on those? They are almost twice as expensive but they are 200 amp and made in the USA.

I searched around a bit, but found no good answers on which alt to buy just lots of threads on how to take then alternator off, which was pleasantly easy.


2006 F250 FX4 Crew Cab - ARP Studs, EGR Delete, Edge Insight w/pyro, SCT X3 with SRL+
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post #2 of 13 Old 11-17-2011, 09:33 PM
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Try this one
https://www.dcpowerinc.com/vaf/produ...92&engine=1018
2 stroker

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post #3 of 13 Old 11-17-2011, 10:34 PM
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I have a stock unit from an '07 that I upgraded at 30K miles or so. If you are interested IM me.
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post #4 of 13 Old 11-18-2011, 01:29 AM
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I have one of these and been very happy with it.
200 amp HD unit
Ford Power Stroke 7.3L 6.0L 6.4L 6.7L Diesel Type High Output Large Case 6G Series Alternators

2007 6.0 PSD,F350 4X4 Lariat,CC, DRW,9' Knapheide body, stainless steel lader rack, SCT with custom tunes, ARP's, EGR delete, ITP RR, Airdog II 130/75, Garrett Powermax, Banks turbo back, Firestone air bags, Autometer gauges
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post #5 of 13 Old 11-18-2011, 07:30 AM
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Originally Posted by 2 stroker View Post
X2 on the DC Power alternator I bought the 250a but they sent me the 270a I have not had a problem since. Do your research before you buy, the 12 larger diodes and heavier windings verses 6 standard diodes and wiring was my selling point. Dissipating heat is the key to longevity with a good alternator. If you go bigger you have to address the extra output and upgrade your cables accordingly in the end the investment is well worth it if you plan on keeping your truck for several years. I have mine built the way I want it and do not plan on trading it for several more years.

2004 F-350 CC LB Lariat FX4, SCT Erics Street tune, BPD EGR Cooler, BPD oil cooler, Empty CAT, Snows Water / Meth, Coolant & Oil bypass filters, 265x70x19.5 on American Force wheels, On board air system, Firestone air bags in cab regulator, dual air horns
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post #6 of 13 Old 11-18-2011, 07:43 AM
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I just installed the powerbastards.com 220a alternator. (High Output Alternators and Accessories | PowerBastards.com)

Great prices, good warranty, completely new alternator was used to build the alternator. Mike is a great person to deal with, sent me the wrong pulley called him up and he expressed shipped a new one to me, got here in 2 days.

I also upgraded ALL my battery cables and alternator cables at the same time. Just piggyback the alt cable with my 1/0 gauge wire.

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post #7 of 13 Old 11-18-2011, 07:59 AM Thread Starter
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Got my alternator tested at AutoZone and it tested fine.... wtf I am lost now. Not sure what to try next.


2006 F250 FX4 Crew Cab - ARP Studs, EGR Delete, Edge Insight w/pyro, SCT X3 with SRL+
2005 Mustang GT - slightly modded
1986 F250 IDI 4x4 ZF5 - Sold
1979 Bronco 460
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post #8 of 13 Old 11-18-2011, 08:09 AM
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I had an alternator once on another vehicle that was cutting out. It was brand new and when I brought it in to be tested it tested fine. Ended up in a big disagreement with carquest so i finally returned it and bought one somewhere else. no more problem.

My point is, i think having it tested is fine, but conditions are different when you're out driving vs when it's on their stationary testing set-up. It's probably a sign that it's at least on it's way out. Might as well replace/upgrade it before it takes the batteries with it. Just my opinion

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post #9 of 13 Old 11-18-2011, 08:20 AM Thread Starter
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I am going to buy a cheapie reman and put it on and if that fixes the prob, I am going to try to return it and then get a DC power alternator.


2006 F250 FX4 Crew Cab - ARP Studs, EGR Delete, Edge Insight w/pyro, SCT X3 with SRL+
2005 Mustang GT - slightly modded
1986 F250 IDI 4x4 ZF5 - Sold
1979 Bronco 460
1967 M35A2 Deuce w/winch FOR SALE!!!
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post #10 of 13 Old 11-18-2011, 09:16 AM
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I just got one from the dealer.


2005 F250 CCSB Lariat FX4

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