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Old 06-03-2012, 06:06 AM
timarnold timarnold is offline
TA
Location: Maryland
 
Join Date: Sep 2009
Posts: 576
Mein Auto: 2003 bmw 525i
The blue twist plug is a cover plug that is removed to insert the flywheel lock to lock the engine at TDC when setting the VANOS timing.
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