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Discussion Starter · #1 ·
im in the process of buying an oil breather filter.

1. is the diameter i need 15mm?
2. do i need to fill in the hole which the existing pipe enters the top of my K&N filter?

thanks
 

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1. Think its the 12mm or 12.5mm one mate
2. Yes cover that hole as the breather pipe wont be going in there anymore if you fit the breather filter on the cam cover.
 

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Discussion Starter · #3 ·
1. Think its the 12mm or 12.5mm one mate
2. Yes cover that hole as the breather pipe wont be going in there anymore if you fit the breather filter on the cam cover.
nice one!

what would you recommend covering/filling it with?
 
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