Alternator Compatible with Caterpillar 259D 236D 242D 246D 257D 262D 277D 279D 287D 289D Replace 23992N 400-48201 For Cat 259D, 12V 80A 1-Groove Pulley. 【Compatibility】Fit for Caterpillar 259D, 236D, 242D, 246D, 257D, 262D, 277D, 279D, 287D, 289D; For Kubota Misc.