One New Aftermarket Replacement Cylinder Seal KitFits New Holland Skid Steer Boom Models:L170Cylinder: 86633432Before Serial Number N7M456356After Serial Number N7M456357After Serial Number N7M468800Cylinder: 87038977Before Serial Number N7M456356After Serial Number N7M456357After Serial Number N7M468800Ls150Cylinder: 86590848After Sept 1999Cylinder: 87038975After Sept 1999Ls160, Ls170Cylinder: 86633432After Sept 1999Cylinder: 87038977After Sept 1999Lx565, Lx665Cylinder: 86528677Between Jan 1994 - Sept 1999C175SN: N7M4666429-; N7M467969-Cyl #: 87675772SN: N7M467969-Cyl #: 87459207L150SN: -N7M461810; -N7M466067, -N7M466068Cyl #: 87038975L160SN: -N7M448359; N7M448360-Cyl #: 87038977; 86633432L175SN: N7M470572-; N7M470553-Cyl #: 87459207; 87460855; 87675772Please Note: Your Seal Kit May Look Slightly Different.Rod: 1-3/8"Bore: 2-1/2"Replaces Part Number: 86570922, Nh-86570922