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Old 07-06-2020, 01:38 PM   #5
EVRLET
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Join Date: Aug 2015
Location: Las Vegas NV
Posts: 354
Re: Which alternator is on my truck

160 amps were commonly found on 2500/3500 trucks. I know the four 2500s I had in this year group were all 160. The two 1500s I have are 145.

However, this is all assuming you still have the original installed or it has been replaced with the right one in the past. Belt sizes are sometimes different between 105 and 145/160
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