I have a 2003 silverado 5.3l RCSB and I need to replace several of the wheel studs on my rear as they have been snapped off by the previous owner. I believe that i need to get some 14mm X 1.5 studs but I see different knurl diameters and not sure which to get , they range 16.00mm +/- .25 or so ... any idea which ones fit factory ? are the larger diameter just a tighter fit vs the smaller diameter, but will both fit?

thanks
_zblee

 

stock knurl size for 1/2 tons are .623. 610-428 is the dorman number for stock replacements. you could use the .630 but they are about 21mm shorter than the others...

 

OK thank you! yeah those were the two that I was not sure which one I needed. Couldn't find anything online that told me the difference . thanks again!

_zblee

 

So napa had two stud sizes. they had one for the front and one for the rear, the front were the longer version and the rear being the shorter. I bought both and before installing either I measured the length of the existing ones and found the rear to be the shorter of the two. based on that I ended up installing the shorter version and it installed with ease .