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Compass Marine How To | all galleries >> Welcome To >> M-25 Air Filter & PCV Valve Upgrade > M-25 Air Filter & PCV Valve
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M-25 Air Filter & PCV Valve
16-MAY-2003 ©Hale Kai Inc.

M-25 Air Filter & PCV Valve

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Bill C 09-Feb-2018 23:53
This looks like a nice installation. Any detail on the PCV valve shown here?
nick maggio 24-Jan-2014 00:39
I did change to a K&N air filter on my 3YM30 and going back to the stock
air cleaner because of so much more noise,my engine is so guiet but too much
noise up in cockpit and forget about the noise down below.
TomT 23-Dec-2008 05:25
The air filter is a K&N (you can just make the "K-N" out from right-to-left upside down in the black rubber top). Just measure the size of the intake unit - and then find one of the universal filters on the K&N web-site. That's essentially how I fit a K&N on my Univ M3-20. You can get K&N online or at any of big - and small - auto parts stores. I like how the PVC was done here better than what I did - I'll probably re-work my set-up a bit.
Gordon 02-Sep-2008 06:58
Also interested in the air filter brand, part number, and fitting diameter please. I'm wondering if this would work on my old Westerbeke 4.107. Thanks in advance.
Martial Harvey 17-Jul-2008 03:14
Very good job! I have a m-25 on my Catilna-34 and i want to replace the air silencer by a filter like you did.
Please, would you tell me the trade mark and part number of this filter?

Thank you