brian
SILVER Star
these have become pretty popular in recent years and for good reason, several actually...the big one is the reduced electrical load while using the starter itself.
they do require some service every couple of years or so as the solenoid brushes age....most of the time when these type of starter fail, it hadn't completely failed, it just needs a tune up.
the replacement parts are readily available and its a one
job at worst, closer to a 
job. some of the indications that its time, or getting to be time, is sluggish starting, clicking of the solenoid but no engagement of the motor or engagement of the starter motor, but not staying engaged.
these are the parts that carry the heavy electrical load as the starter motor does its work....so the type of wear is from the arcing of full battery amp-age. while straight replacement of parts is easiest, unless heavily pitted and arced up, the existing pieces can be cleaned up to extend their service life a bit longer.
they do require some service every couple of years or so as the solenoid brushes age....most of the time when these type of starter fail, it hadn't completely failed, it just needs a tune up.
the replacement parts are readily available and its a one



these are the parts that carry the heavy electrical load as the starter motor does its work....so the type of wear is from the arcing of full battery amp-age. while straight replacement of parts is easiest, unless heavily pitted and arced up, the existing pieces can be cleaned up to extend their service life a bit longer.