I read on some forums that a 2002 durango alternator will work on xjs if you grind down the brackets but i can’t believe that it will work because it isn’t even remotely close to fitting before grinding. anyone know???

 

I might be going down this road myself. It is not mentioned much but I have read a post where the guy said a little grinding of the block was necessary too. I have been PM'ing with a guy who was pretty sure he used the 2002 Durango 160 amp and did not have to grind down the block though.

Do you have that upside down in the picture? I think the 2002 Durango 160 amp alternator is specific for '01 to '03. And just for the Durango. Any chance you might have a different one? Where did you get it? Looks new. Would not be the first time a part was boxed wrong.

 

I recommend the external regulator mod vs. a different alternator. Jeep pcm's on the xj and zj seem to be bad out of the box, just bad design. I put in an external reg from an 88 powerwagon. No more dead batts and voltage drop at idle. for sure. And yes, under $20 and they do have temperature compensation built in. Anyone interested may pm me. Heck might even post a thread.

 

It will fit. Grind away! I'll try and take the best pics I can in the truck tmw. I wish I took pics when I did the upgrade.

 

Found a pic from an old post that may help you see what you have to do. Also remember to swap pulleys and 99+ has the same connector as a 2002 Durango.

 

okay guys i figured out my problem! the one i bought is for the 5.9 v8 and the correct one is for the 4.7. other forums should be more clear on which one is the correct one.

 

I thought it was the 5.9 myself.
You sure cause the 4.7 has that stud coming off the top.
Assuming the picture is to be believed.

https://www.napaonline.com/en/p/RSE2...earchIndex=App

Also has a 6 groove pulley apparently. Does that mean you don't swap it?

 

i think that napa one is the 5.9 because the one i bought has that same stud. the top side of the alternator that has the double shear mounting isn’t even close to fitting i would have to load some washers or a spacer in there. I ordered a 4.7 off rock auto (part TYC 213915) that should come in on friday. I’ll keep you guys updated.

 

Would not be the first time that pictures were wrong on the Napa site but this is the 5.9 one.

https://www.napaonline.com/en/p/RSE2...earchIndex=App

And it has the 7 groove pulley that everybody says you need to swap.

 

I totally got it backwards. i originally ordered a 4.7 and it is supposed to be the 5.9. the new one i ordered is for a 5.9. sorry for the mixup. THE CORRECT ONE IS THE 5.9!

 

okay my new alternator is here! i can confirm that the 5.9 v8 is the correct motor. it’s so much closer than the other one is i can almost just bolt it straight up

 

You got me worried I thought I gave the wrong advice ! Hahaha good luck