One year warranty, a pre assembled (complete) 1.8t small port cylinder head set with new upgraded exhaust valves, all new valve seals, all new exhaust valve guides, polished 1.8 cams, new cam chain tensioners (Hudson brand), new cam chain tensioner gaskets/ half moon seals, new Oem lifters, new Oem intake valves. Head is machined hot tanked, full cnc valve job, decked, timed for bolt on assembly. Price listed includes shipping (professional assembly highly recommended). Price listed reflects stock spring and retainers.