INA EA0024 Overrunning Alternator Pulley OAP FEAD 5350024100

The INA (Schaeffler) EA0024 Overrunning Alternator Pulley (OAP) is a precision-engineered front end auxiliary drive (FEAD) component designed to protect your accessory belt drive system from the damaging effects of crankshaft rotational irregularities. Also known as an alternator decoupler pulley or OAP, this is a direct OEM-quality replacement unit carrying global part number 5350024100.

In a standard internal combustion engine, the four-stroke cycle causes the crankshaft to continuously accelerate and decelerate, generating torsional vibrations that are transferred throughout the FEAD system. Unlike a traditional rigid belt pulley, the INA EA0024 incorporates a one-way overrunning clutch mechanism that transmits drive force in only one direction, decoupling the alternator from these crankshaft pulses and calming the entire belt drive.

Key Features:

• Reduces the critical impact of alternator inertia and crankshaft irregularities on the accessory drive
• Allows rotational movement to dampen vibrations, extending service life of belts, tensioners, and all FEAD components
• Minimizes belt noise and vibration for a smoother, quieter running engine
• Contributes to improved alternator efficiency and reduced fuel consumption
• Corrosion-resistant outer surface for long-term durability
• Protective plastic cap shields internal components from dirt and contamination
• OEM-quality construction from Schaeffler's INA brand — a global leader in engine and drivetrain components

A worn or failed overrunning alternator pulley can cause belt wobble, accessory drive noise, and accelerated wear across the entire FEAD system. Replacing with a genuine INA OAP restores proper decoupling function and protects downstream components. INA FEAD kits are also available for comprehensive system maintenance.

Manufacturer Part Number: EA0024 | Global Part Number: 5350024100