Why does a new starter come with an allen wrench ??

[mtnmankev]

There is ZERO use on a starter for an allen wrench, but I suppose maybe someday it'll come in handy somewhere.
And at least they provide the wrong shims, the offset bolt starters like offset shims.

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[Scottserado]

Maybe on some trucks they came with Allen head bolts just a guess though my dad had a 454 towtruck square body and the starter bolt bent somehow

 

[bucket]

I guess these days an Allen wrench is cheaper than round stock. It is used to gauge the clearance between the flywheel and the starter.

 

[WFO]

I just cut a little off the end of those shims, when using on an offset starter.