Quote:
Originally Posted by BYprodriver
The IMS to crank chain tensioner was updated with a preload spring to prevent the chain "flapping" if the tensioner oil leaks down, it is retrofitable with no other mods & I highly recommend this.
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According to PET, the current PN for this is 996-105-176-51. However, when you punch it into the Porsche price database system, it comes up as superseded to 996-105-188-01, which is the 987, Cayman, and 997 part number. So, it would appear that the newer 987 part number is indeed compatible with the older cars, and is indeed probably an upgrade (although I can't find any tech bulletin that states that specifically).
-Wayne
