Corteco 80004704 Engine Crankshaft Pulley

Corteco 80004704 Crankshaft Pulley for BMW

The Corteco 80004704 engine crankshaft pulley is a decoupled OE-style replacement built for BMW applications that use a 5-rib, 6PK belt setup. With a 170 mm outer diameter, it is specified for vehicles where crankshaft vibration isolation and accessory drive stability are critical.

Key Features

• Brand: Corteco
• Part number: 80004704
• Engine crankshaft pulley for BMW engine applications
• Decoupled design for vibration control in the accessory drive system
• 5-rib configuration with 6PK parameter
• 170 mm outer diameter
• OE-style fitment for selected BMW 328i, X3, X5, and related models

Product Details

This crankshaft pulley is used in the front accessory drive to transfer engine rotation to the belt-driven components while helping isolate torsional vibration. The decoupled construction is important on many BMW inline-six applications, including 2006-2013 BMW 328i, 2007-2011 BMW X3, and 2007-2009 BMW X5 fitments listed for this part. The Corteco 80004704 is also referenced for additional BMW models such as 325i, 330i, 530i, Z4, X1, and 125i, depending on engine configuration.

This part cross-references URO 11237564969 for the same application.

What It Helps Address

• Crankshaft pulley wobble or imbalance
• Belt drive noise from a worn decoupled pulley
• Accessory drive vibration at idle or under load
• Serpentine belt tracking issues related to pulley wear
• Loss of smooth power transfer to belt-driven accessories

Installation Notes and Tips

• Verify the 5-rib, 6PK specification and 170 mm outer diameter before ordering.
• Confirm decoupled pulley requirements on the vehicle’s engine code and accessory drive layout.
• Inspect the belt, tensioner, and adjacent pulleys during replacement to avoid repeat noise or vibration.
• Follow the vehicle service procedure and mounting instructions for proper alignment and torque.

Quality Assurance

Corteco is an established OE-focused brand in engine sealing and vibration control components. This part number, 80004704, is specified for selected BMW applications where a decoupled crankshaft pulley is required for proper accessory drive operation.