This bolt is for the lower alternator bracket on the B series engine with the 1320 steel JRSC alternator bracket kit

this bolt is compactible only for the 1320 performance alternator bracket the black steel one it will not work for the silver aluminum jackson racing one due to we redesign ours to be thicker on the side to with stand more abuse. if you have the aluminum JRSC version please check out other listing we did make one.