The Fabco Input Bolt, part number 523-90-4 or 523904, is a genuine OEM Fabco fastener designed for heavy-duty truck drivetrain applications. Sourced as a Fabco original, this input bolt carries OEM status and is subject to special order handling. Fabco components are engineered to manufacturer specifications, making this bolt a direct-fit choice when replacing a worn or damaged input bolt in your Fabco-equipped drivetrain. Call Pro Gear and Transmission to confirm proper fit for your specific application before ordering.
Features
Genuine OEM Fabco part
Part number: 523-90-4 or 523904
Input bolt for Fabco heavy-duty drivetrain applications
OEM status confirmed - not an aftermarket substitute
Subject to special order handling - call to confirm lead time
