Original part number changed from 0584093 to OEM 0439561. Difference is gasket changed from o-ring style seal to soft, flat rubber gasket. Orignal directions and service manual says "apply thin coat of Triple Guard grease and torque bolts to 60-84 inch pounds." The flat rubber gasket distorts at far less than specified torque. Need installation directions and torque spec for flat rubber gasket. Apparently this gasket was introduced on 1996 models. Also, is there any type of gasket sealant necessary? Thanks.