Shear Bolt Replacement

Hey guys!
 
I have a Tecumseh 10HP Grand Prix Dual Stage snowblower and one of the auger shear bolts snapped off and I'm having a bit of a hard time finding a replacement. Wondering if someone could help.
 
I purchased a 1/4inch x 1.75inch shear bolt. Fits nice, not long enough. I measured the other bolt (not removing it), it measured over 2 inches. I can't seem to find anything that long, or am not looking in the right place?
 
Thanks for the help!