Okay... They list 2 sizes for 99 D 5.2L 4wd
http://www.oreillyauto.com/EW3/Produ...&currentPage=0

http://www.oreillyauto.com/EW3/Produ...&currentPage=0

How do you know what the size of mounting studs are without taking it off and taking it in?



Same thing goes for the freaking sway bar bushings, dang truck has like 4-5 different sway bars sizes that it list...

Guess i could call the dealer and harass them for correct size threw the Vin. But knowing them they would just give me wrong information anyways.

 

Going on a limb for ya, but I think its the 12mm if you didn't have the factory tow package with the 3.92 gearing, and with it you would have the 14mm.

 

Ya man thanks for the help... Dunno if mine is bad or not but i am just going to replace everything in the front end and ran into this as well the sway bar thing. pretty much ging to rebuild this truck from ground up.

 

Well, they're a nice rig thats for sure.

 

Looks like I bought the wrong idler arm. I bought the 12mm for my 99 5.2l durango. I do not have a tow package, but when I went to install the new idler arm the mounting holes on the new one were too small for the plate with the two bolts on it. I bought the moog K7246T steering idler arm. I guess I have the 14mm one..lol. Sux that the 14mm one is twice the price about $135 on Jeggs