HP C4921AE No 14. cyan Printhead 8ml for CP1160/D125X/ D135/D145/ D155/D155xi 7100 series. Page life - 30,000. If you want to get the absolute best level of performance out of your printer, you need to make sure that your printheads are working to their optimum level. Producing spectacular prints, you can ensure that there is never any problem with lack of definition or unclear results. HP understands that not everyone is comfortable around technology and it strives to make installation of printer components as simple and straightforward as possible, allowing for completely easy printing.