The Eaton 4304539B is a manual transmission input shaft designed for heavy-duty truck applications. This part is also referenced as 4304539-BULK20 or 4304539BULK20. Sold by Pro Gear and Transmission as a genuine Eaton component, it carries the Retail Vendor Code FB and is sold as an individual unit. The input shaft is the critical link between the clutch and the transmission gearset, transmitting engine torque into the gearbox. For application-specific fitment questions, contact Pro Gear and Transmission directly.
Features
Genuine Eaton manual transmission input shaft
Part number 4304539B or 4304539-BULK20 or 4304539BULK20
Retail Vendor Code: FB
Sold as an individual unit (each)
Fits heavy-duty manual transmission applications
