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JetJock

09-27-2012 08:47 AM

Oil Sending Unit being replaced

Anyone know what size wrench you need to remove the adapter fitting that goes into the block on a Merc 454, 340 HP?

I am replacing mine on my port motor (Carver 42) and it is in a tight spot and want the correct size wrench before I climb back there......I know the Oil sending unit is a 9/16, The adapter fitting is what is I need to know

THANKS IN ADVANCE!!!!!

cubicinches

09-27-2012 09:37 PM

If it's a 3/8" NPT bushed down to 1/8" NPT, they're typically 11/16" wrench size.

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