is there any diffrence between the Gen.I and Gen.II crank hub bolt. im swapping my crank hub and dumper from my old engine to my new build so i thought it would be better to replace the bolt and washer,,, i found this from ARP

http://www.summitracing.com/parts/AR...n/?prefilter=1

will this fit my stock crank

 

It's the right thread pitch, but I cant tell if the washer is too large or not or if the bolt is the right length.

 

It depends on what crank hub you have. Stock hubs need a small washer (more like a collar) while aftermarket hubs/dampers (i.e. ATI) require the large washer.