slumlord444 (8/18/2017)
I would be calling Mac's.
Mac's Tech says they are used to shim/space the Mounting Bolts. Bolts should not protrude past the
Crankshaft Flange but the Bolts should engage as many Threads as possible. Bolts can be spaced to fit
within these requirements. Don't know why they don't just put that Information with the Spacers.