Aeromotive 21102 Alternator 32% Overdrive Pulley, Billet, (Serpentine Belt), Ford & GM
- Fitted with a high quality NTN/NSK Japanese bearing.
- Replacement of failed original A/C belt tensioner pulley instantly resolves worn bearing squeal and vibration.
- Manufactured to OE pulley dimensions for proper clearances and belt alignment.
- High-strength alloy or composite construction withstands intense engine heat and A/C compressor vibration.