Kyocera TASKalfa 4551ci MAGENTA Toner Cartridge (Compatible) - Compatible Brand Estimated Yield 20,000 pages @ 5% Mfr Part #: Kyocera TK-8507M, TK8507M, 1T02LCBUS0 Copystar TK-8509M, 1T02LCBCS0, TK8509M Also fits these models: Kyocera TASKalfa 4550ci Kyocera TASKalfa 5550ci Kyocera TASKalfa 5551ci Copystar CS4550ci Copystar CS4551ci Copystar CS5550ci Copystar CS5551ci