V4INK174; Replacement 501A Q6473A Toner Cartridge-Magenta 4000 Page Yield for Color LJ 3600 3800 CP3505 Series Color: Magenta Style: New Compatible/Replacement Guarantee: One-Year 100% Warranty/Shelf Time: 18M Page Yield:4000 page at 5% Coverage ISO/IEC 19752 (letter/A4) Compatible Printer List: Color LJ 3600/3800/CP3505 Series