Whats is this???

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Apr 19, 2011 | 09:23 AM

massive1

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Joined: Feb 2011

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From: 956 tx

Whats is this???

i just bought a 2002 harley davidson supercrew and saw this filter on top of the engine oil cap with two lines running one to the intake and one back into the engine head cover

Apr 19, 2011 | 10:25 AM

AFSOCSGT

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Joined: Sep 2010

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From: Navarre FL

It has something to do with the Positive Crankcase ventilation. It probably keeps the supercharger from pressurizing the crankcase. Might actually be a check valve.

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