Caterpillar 74.7mm Inner Diameter Front Idler U-Cup Seal 1P-4879 is a front idler product that guides the track chain and contributes to correct track tension. It is listed for Caterpillar heavy-equipment applications; use part number 1P-4879 as the primary identification reference.
- Part Number: 1P-4879
- Brand: Caterpillar
- Product Category: Front Idler
- Equipment Type: Bulldozer, Ripper, Pipelayer, Hydraulic Control, Excavator, Logger
- Compatible Models: D8K, D8H, 8D, 583K, 183B, 235C, 227, 229, 225, 235, 229D, 231D, 225B, 235B, 235D, 8S
- Engine Models: Confirm by equipment serial number
- Condition: New
Fitment can vary by machine configuration and serial-number range. Compare the original part number, dimensions, connectors and mounting points before purchase.





