97-00 Alternator Pulley - Decoupler Upgrade

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If you hear a buzzing noise immediately following engine shutdown, the bearings have failed - If the pulley will not spin freely at, the internal spring has locked up. (causing increased tensioner movement or belt span vibration) - If the pulley won't spin freely in one direction and engages the
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305397
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Description
If you hear a buzzing noise immediately following engine shutdown, the bearings have failed - If the pulley will not spin freely at, the internal spring has locked up. (causing increased tensioner movement or belt span vibration) - If the pulley won't spin freely in one direction and engages the alternator in the other direction - All are signs that the pulley requires replacement.

IDP or "Isolating Decoupler" Pulleys are also abbreviated as OAD pulleys; "Overrunning Alternator Decoupler" and can "decouple" or smooth the belt torque changes in either direction. A lower cost clutch pulley cannot offer this same benefit; it "slips" in one direction only. Only a true IDP/OAD pulley can provide the belt system with controlled drive torque providing higher efficiency along with reduced noise, vibration, and belt "slap".

Specifications
Base Unit of Measure EA
Net Weight 1.25
Special Order False
Car Years 1 1997 1998 1999 2000
Part # 305397
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