Plug/sensor in head

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Demolition Expert
Joined
Oct 29, 2006
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When I took my cylinder head off to be O-ringed I took the sensor & or plug of of the drivers side on the rear of the block. Does anyone know what size that is so I can stick something in there to plug her up? I know its huge!
 
If you are talking about the water temp sensor I believe it is 3/4" Pipe Thread.
 
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