E46Fanatics - View Single Post - Information on Harmonic Damper -Crankshaft Pulley
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Old 07-31-2012, 06:45 PM   #14
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Join Date: Apr 2008
Location: Dallas, TX
Posts: 2,217
My Ride: E30-E46-E90-E90M-F30
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What is the main difference between the Pre 2002 and Post 2002 Harmonic Damper?

People been saying that the Post 2002 Harmonic Damper has a different harmonic dampening frequencies than the Pre 2002. However, upon inspecting the Pre and Post 2002 dampers I saw that they both have the same 275-305Hz Freq

The main difference I see is that the post AUG 2002 has the 3 ribbed AC Pulley and the pre AUG 2002 has a 4 ribbed AC Pulley
post AUG 2002 Pulley (3 ribbed) part number is 11-23-7-513-862
Pre AUG 2002 Pulley (4 ribbed) part number is 11-23-1-438-995

Last edited by flashmeow; 07-31-2012 at 06:47 PM.
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