The Mack Trucks, Inc. 309GC2178 Drive Shaft Pulley is a drivetrain component for Mack trucks, carrying the exact part number 309GC2178. This drive shaft pulley is used within the vehicle’s drive shaft system to transfer rotational motion between components. Manufactured by Mack Trucks, Inc., the 309GC2178 designation identifies the specific replacement part for compatible Mack drivetrain applications.
