The Epson S051202 photoconductor unit does the majority of the magenta toner distribution for the toner cartridge available separately. This genuine Epson C13S051202 offers you the very greatest print quality for your AcuLaser CX37DTNF.When the print quality produced by your old Epson C13S051202 begins to deteriorate, look no further than this original photoconductor unit. Installing a brand new Epson S051202 photoconductor instantly brings the prints of your printer back up to Epson standards.