URO 12317516105 Alternator Overrunning Decoupler Pulley

The URO 12317516105 is an aftermarket replacement alternator overrunning decoupler pulley designed to match the original equipment specification for BMW vehicles. This pulley serves as a critical component in the charging system, connecting the alternator to the accessory drive belt.

The overrunning decoupler pulley (ODP) uses a one-way clutch and internal torsional spring mechanism to absorb drivebelt shock loads and reduce vibration transmitted through the accessory belt drive system. Replacing a worn or failed decoupler pulley helps eliminate belt noise, reduces stress on the alternator bearings, and extends the service life of the serpentine belt and other drive system components.

Key Features:

• Direct OEM replacement for BMW part number 12317516105
• Overrunning decoupler design absorbs belt shock and reduces drivetrain vibration
• Manufactured to OEM specifications for proper fit and function
• Helps extend belt and alternator bearing life
• Restores proper charging system operation

URO Parts specializes in aftermarket replacement components for European vehicles, offering a cost-effective alternative to dealer pricing without sacrificing fit or quality. This pulley is a recommended service item whenever the serpentine belt or alternator is being serviced.