INA 05117591AA Alternator Decoupler Pulley

The INA 05117591AA is a precision-engineered alternator decoupler pulley designed to reduce vibration and improve belt drive system performance. This overrunning alternator decoupler (OAD) absorbs crankshaft rotational irregularities and dampens torsional vibrations from the engine, protecting the alternator from excessive stress while extending belt life.

Key Features:

• Overrunning clutch mechanism allows alternator to free-wheel during engine deceleration
• Internal torsional vibration damper reduces belt noise and wear
• Direct replacement for worn or failed OEM pulleys
• Precision manufacturing ensures proper belt alignment and tension
• Engineered to OEM specifications for reliable performance

INA is a leading manufacturer of engine components and bearing technology, known for producing high-quality replacement parts that meet or exceed original equipment standards. This alternator pulley is designed for vehicles equipped with overrunning alternator decoupler systems, typically found in modern vehicles with start-stop technology or high-efficiency belt drive systems.