Our rebuilt transaxles are completely dismantled and cleaned. The synchros, seals gaskets and all questionable or worn parts are replaced. These transaxles are covered with our six month/six thousand mile warranty against internal breakage. There is a core charge, which is refundable upon receiving your rebuildable part. Please do not expect the complete core charge to be refunded as 914 gear boxes these days need many more parts than the rebuild charge covers. Full/complete.