2008 LMM dual alternator idler

Mogman

Member
May 3, 2020
311
14
18
Papalote, TX
It looks like I need to get an idler pulley to install dual alternators, I am assuming it is the same part number as the other two idler pulleys yes?
The picture says 2006 but this still looks right, I have a K061369 belt to install.2006-duramax-belt-routing.jpg
 
Last edited:

Ron Nielson

Member
Oct 11, 2009
325
20
18
Berryton, KS
Use your VIN# and go to a GM based website and do the parts lookup. I would GUESS that it is the same, but you never know unless you verify the correct part number..
 
  • Like
Reactions: Mogman

Nate’s Dmax

Member
Dec 11, 2020
76
11
8
Unfortunately it is not the same as the other two. Bigger diameter i believe. Here is the Gm part # 98057284
 

2004LB7

Well-known member
Dec 15, 2010
3,456
244
63
Norcal
I just went down to pick and pull and found one with the right bolt size and looked to have good bearings. worked fine. small diameter changes in the idler will make little difference in the overall slackness of the belt as the tensioner can take up or give some
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)