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Old 07-31-2012, 07:45 PM   #14
flashmeow
Banned User
 
Join Date: Apr 2008
Location: Dallas, TX
Posts: 2,220
My Ride: E30-E46-E90-E90M-F30
update:
I edited the original picture to show the photo captions

Question:
What is the main difference between the Pre 2002 and Post 2002 Harmonic Damper?

Answer:
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 07:47 PM.
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