Millions of late-model vehicles now require alternators equipped with OAD™ pulleys rather than conventional solid or "one-way clutch" pulleys.
The OAD™ Pulley is significantly different from any other "clutched" alternator pulley. Using another type of pulley in place of an OAD™ pulley is a sure way to cause drive belt system problems.
To prevent damage to the vehicle, confirm that your alternator supplier always replaces OE design with OE design; if the vehicle requires an OAD™ pulley, be certain the unit you install features the same technology.
- CAP PLUG
- THRUST WASHER
- BALL BEARING
Here are a few Frequently Asked Questions regarding alternator pulley design for today's vehicles: