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      11-25-2012, 11:19 PM   #2
Evelyn's Avatar

Drives: 335i M
Join Date: Aug 2011
Location: Washington

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2008 335 m  [2.50]
This is not an easy DIY, when a new sleeve is installed the pan and internals (valve body) need to be dropped and when the new sleeve goes in it has to have exactly 3mm clearance between the plug and sleeve no more no less or yes it will cause big problems. As far as price it can vary greatly with Indy shops $500-$900. Not mention there is also only one way and one procedure when refilling the tranny with fluid that requires a BMW scan tool, also the tranny has to be completely cold or you risk the pan warping right in front of you. I recommend a shop experianced with your tranny or the dealership do the job.