Not trying to hyjack your responses here, Sajeev but here is a related question to pose to the Community.  I have a number of collector cars and also a couple of daily drivers that I do repair work on myself. In the last 10 years I have had to replace a number of Alternators.  Typically I try a rebuilt because of availability & much lower cost.  In nearly every instance the first one (or 2) either will not work out of the box or only last about 300 miles.  I have personally talked to lots of others who have had the same experience.  It seems the rebuilders don't even test them ... they leave that up to the customer ... talk about lack of quality assurance!  In a few instances I have resorted to the much more expensive "new" option ... which seems somewhat more likely to get you a better quality unit.   I would be very interested in a reader "poll" on this subject.  Alternators in particular seem to be a "worst case" for aftermarket lack of quality assurance.   ... View more