Coolant Block Plug For My 340 With Pics

[daveh]

Hey Guys,

Anyone know what size these coolant block plugs are and where I can get the correct ones?  All I can seem to find is fine threaded plugs and the block has course threads.  I've tried everywhere, Summit, Jegs, Amazon, Home Depot, Autozone, etc.  I hope you can help me. It's for my 340.

Oh the old ones were too corroded to use so I chucked them.  I didn't think it would be such a big deal to get them.  Thanks

Dave

[brads70]

1/4 NPT (or 3/8 NPT)  available at any hardware store. 

[burdar]

Yep, pipe thread.  They were originally zinc plated and installed after the engine was painted.

[daveh]

But all the hardware stores have fine thread and these are course. 

[brads70]

But all the hardware stores have fine thread and these are course.

NPT stands for national pipe tap, its a standard thread . There are no other threads unless your dealing with European stuff. 

[YellowThumper]

NPT stands for national pipe tap, its a standard thread . There are no other threads unless your dealing with European stuff. 

X2000 on this statement

[daveh]

Found them thanks Guys. 

[brads70]

Found them thanks Guys.

 

[YellowThumper]

To stick with the theme  2000

[daveh]

Cute