One New Aftermarket Replacement Seat Backrest Fits Caterpillar (Fits CAT) D2 Crawler DozerThis aftermarket replacement seat backrest is designed to fit the operator seat on Fits Caterpillar D2 crawler dozers. Part number YF176 is the backrest component of the three-piece seat cushion set (YF175 seat bottom, YF176 backrest, YF177 armrests) used on early and late D2 Fits CAT models.Specifications Back Cushion Width: 13 in. (Top) - Tapered 25 in. (Bottom) Back Cushion Height: 12.5 in. T-nut Holes: 11 in. on center, 7.25 in. Top to Bottom Compatible ModelsFits Caterpillar (Fits CAT) Crawler Dozers: D2 (Early and Late models)Replaces Part Number(s):YF176Aftermarket Interchange NumbersAlso cross-references with full seat cushion set part numbers: 3B5910, 3B5910-A, 3B2596, 3B2596-A, 1B2305, 1B2305-A (full set); sold individually as YF176 backrest only. Companion parts: YF175 (seat bottom), YF177 (armrests).New aftermarket replacement part - not remanufactured, not used.