Ok, following are the parts number for alternator & alternator decoupler pulley for 2006 3.5L Pacifica. These part numbers may apply to other model years with 3.5L engine.
Alternator Pulley: Old part # 04861506AG is superseded by part # 4861506AH
Alternator: 4868760AH (160 Amp) or 4868760AF (145 Amp)
Ok so my alternator was making grinding noises (2006 Pac 3.5L). I considered replacing the alternator but then decided to 'fix' it, just for experience. I bought a decoupler pulley ($50 - Gates brand), removed the alternator from the vehicle. When I removed the pulley cover, there was lots of rust inside and pulley was obviously damaged. I tool the alternator to a local alternator shop and asked them to put new pulley on & replace the bearings. It cost be $35 and grinding noise is gone, for now. I'll be happy if this fix will last 50,000 miles.
Last edited by Raindrop; 03-17-2012 at 04:09 AM.
Reason: Just finished the alternator job.