Old 71/72 Mercruiser Block Drain Bolt?

Winsok

Seaman Apprentice
Joined
Jun 30, 2011
Messages
36
I seem to have lost it over the winter, no idea were it went, had it in my tool box went to go get it all back together to take it out on mothers day and i only have the manifold plug but not the engine block plug...


Does anyone know what size it is on this year? looking to maybe go to the hardware store and find something that will do the job, i know its brass bolt..

maybe a 1/2 brass fine thread pipe plug? or something?

need a response asap if anyone can help.
 

Winsok

Seaman Apprentice
Joined
Jun 30, 2011
Messages
36
Re: Old 71/72 Mercruiser Block Drain Bolt?

sorry mercruiser 140, old gm 3.0l 181 v4
 

Bondo

Moderator
Staff member
Joined
Apr 17, 2002
Messages
71,161
Re: Old 71/72 Mercruiser Block Drain Bolt?

Ayuh,... 1/4" pipe plug...
 
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