Alignment Shims (Spacers) for Crankshaft and Alternator Pulleys

Having trouble keeping belts from coming off or prematurely wearing?  Perhaps there is an alignment problem between the two pulleys.  The pulleys should align as close to perfectly as possible.  This kit comes with one shim to slip behind the generator/alternator pulley, and one shim to slip behind the crank pulley. Also works great for shimming the pulley out to clear a full-low oil pump cover.