yes they can,but the internals need to be serviceable. then you need to get the correct repair kit ,( if you can find one). some people have got away with just middle gasket replacement, but if you need bearings etc ... go for a recon or new . in a lot of cases its about the time factor, especialy if you only have one car. i have just changed mine on the KV6 but luckily i had a recon to put on. i now have another as a reserve , again recon. i have learnt my lesson there,having bought 3 used ones on ebay , only to find they lasted just a few weeks.as the milage is usually unknown, ... so for me its .. recon or new from now on.
