One New Aftermarket Replacement Track Carrier Roller Group Fits Caterpillar (Fits CAT) Hydraulic ExcavatorsThis aftermarket replacement track carrier roller group (also known as a top roller or upper roller) is an undercarriage component that supports and guides the track chain along the top of the undercarriage frame on Fits Caterpillar (Fits CAT) large excavators. It replaces OEM part number 3004610 and cross-references to Fits Caterpillar part number 1247280 / 124-7280.Specifications Weight: approximately 41-43 kg Type: Carrier/Top Roller Group (upper roller assembly) Application: Large hydraulic excavator undercarriage Compatible ModelsFits Caterpillar (Fits CAT) 330 Series: 330D, 330D L, 330D MHFits Caterpillar (Fits CAT) 345 Series: 345B, 345B L, 345B II, 345B II MH, 345C, 345C L, 345C MHFits Caterpillar (Fits CAT) 365 Series: 365C LReplaces Part Number(s):3004610, 3004610-A, 1247280, 1247280-AAftermarket Interchange Numbers124-7280, CR6596New aftermarket replacement part - not remanufactured, not used.