DansGreyMj Posted June 29, 2006 Share Posted June 29, 2006 i need a new alternator and i called around a few places and each one had different amps, my question is does it matter cuz at napa they had a 160 amp unit and wanted to know if it would work in my 87 4.0 with ac thanks in advance Link to comment Share on other sites More sharing options...
whowey Posted June 29, 2006 Share Posted June 29, 2006 213-4524D Napa part number for a lifetime warranty unit. IIRC, its the 105 amp model. Cost $120, three years ago. Link to comment Share on other sites More sharing options...
DansGreyMj Posted June 29, 2006 Author Share Posted June 29, 2006 yeah i talked to the guy the 105 and 160 unit r both $110 i just wanna know if they all bolt in the same Link to comment Share on other sites More sharing options...
jage Posted June 29, 2006 Share Posted June 29, 2006 The 160 amp unit should work electrically, AFIK a higher amp rating just allows you to pull more - compressor, winch, a/c etc. You only pull what the regulator allows, anything else is extra potential. At the same price I'd go with the higher amp. If you're concerned about mechanical fit have the guy put them both up on the counter. If the computer says it fits I usually trust 'em, but I only have a 10 min drive so you might want to be more careful. Link to comment Share on other sites More sharing options...
DansGreyMj Posted June 30, 2006 Author Share Posted June 30, 2006 does the alternator in an xj with a tow package have a higher output than the rest or are they all the same Link to comment Share on other sites More sharing options...
DirtyComanche Posted June 30, 2006 Share Posted June 30, 2006 It's pretty random what they got. But, AFIK, 160amp alternators were NOT avaliable stock. However, you can use one. If I could get my hands on one cheap, I sure as hell would. Link to comment Share on other sites More sharing options...
pingpong Posted June 30, 2006 Share Posted June 30, 2006 Pretty much all MJ/XJ's all came with the 105amp. I have never heard of a 160 amp one being available. If it does fit give me the part number, I wil add one to my rig Link to comment Share on other sites More sharing options...
DirtyComanche Posted June 30, 2006 Share Posted June 30, 2006 Uh, I've got a 61amp... No, it doesn't work worth $#!&. Link to comment Share on other sites More sharing options...
whowey Posted June 30, 2006 Share Posted June 30, 2006 IIRC, the 160 amp was 'available' but on police/fleet models. My ex-State of Montana XJ had one originally. Link to comment Share on other sites More sharing options...
Oizarod115 Posted July 1, 2006 Share Posted July 1, 2006 we put a 160 in my brothers 90 XJ 4.0 works fine. i say go for it... with his red top and 160 alternator he can run basically whatever he wants Link to comment Share on other sites More sharing options...
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