Alternative Part Number: 89849186, 9849186. Condition is “New” a Genuine part from our warehouse. This listing is for a replacement brake disc which is listed as applicable for use on the following models. 8670 6 CYL AG TRACTOR ALL PURPOSE 09/93 01/02. 8670A 6 CYL AG TRACTOR 02/01 12/03. 8770 6 CYL AG TRACTOR ALL …