Kyocera TASKalfa 4551ci Cyan Toner Cartridge (Compatible) - Compatible Brand Estimated Yield 20,000 pages @ 5% Mfr Part #: Kyocera TK-8507C, TK8507C, 1T02LCAUS0 Copystar TK-8509C, 1T02LCCCS0, TK8509C Also fits these models: Kyocera TASKalfa 4550ci Kyocera TASKalfa 5550ci Kyocera TASKalfa 5551ci Copystar CS4550ci Copystar CS4551ci Copystar CS5550ci Copystar CS5551ci