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The Nissan OEM filter has a foam seal on one side and a rubber lip seal on the other. Now to install - which side up??? And why....
 

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Y2KGUII ZD Wgn
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The Nissan OEM filter has a foam seal on one side and a rubber lip seal on the other. Now to install - which side up??? And why....
This has been asked many many times, it is in the archives somewhere. The sponge goes to the top and the lip seal to the bottom. The lip seal reacts better to any water that may enter the airbox.
 
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