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-   -   merc 525sc engine oil bypass valve (https://www.offshoreonly.com/forums/general-q/291362-merc-525sc-engine-oil-bypass-valve.html)

offthefront 03-22-2013 04:34 PM

1 Attachment(s)
will the GM bypass fit the merc oil Tstat? anyone know which hole it goes in? I'm thinkin 5 o'clock ....

mike tkach 03-22-2013 05:41 PM

part no 7 is the bypass valve,you unscrew the threaded peise that the filter screws on to,then you remove the valve,i use a welsh plug that comes from napa,i can give you the part no for the plug tomorrow if you would like,i bought a bag of them for 12 bucks,10 plugs i think.

offthefront 03-22-2013 08:40 PM


Originally Posted by mike tkach (Post 3890746)
part no 7 is the bypass valve,you unscrew the threaded peise that the filter screws on to,then you remove the valve,i use a welsh plug that comes from napa,i can give you the part no for the plug tomorrow if you would like,i bought a bag of them for 12 bucks,10 plugs i think.

The bypass is behind connector? oil flow is towards the connector ....

offthefront 03-27-2013 07:15 PM

1 Attachment(s)
Bypass .....

mike tkach 03-27-2013 07:29 PM


Originally Posted by offthefront (Post 3893935)
Bypass .....

thats it.

offthefront 04-02-2013 11:39 AM

1 Attachment(s)

Originally Posted by offthefront (Post 3893935)
Bypass .....

just for FYI


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