Oil Sending unit thread size.

[74 challenge]

I am chansing a leak and thanks to an idea from Chryco i'm looking at my mechanical oil guage as a possible culprit. What is the thread size of the oil sending unit hole? I am planning on capping it and seeing if it still leaks.

Size? NPT?

Thanks!

[Bullitt-]

NAPA shows as  1/8" X 27 NPT

[74 challenge]

NAPA shows as  1/8" X 27 NPT

Thanks! that is an odd size.

[Bullitt-]

Thanks! that is an odd size.

quick search revealed it's the same size as some grease fittings

[GoodysGotaCuda]

Thanks! that is an odd size.

Shouldn't be hard to find a plug at lowes or napa.

[74 challenge]

quick search revealed it's the same size as some grease fittings

I am likely to change the guage if it's the reason for the oil leak so i am going to just use one of these form homedepot to check. It only needs to be in the engine for 20 minutes.

http://www.homedepot.ca/product/square-head-plug-1-8/924627

[Chryco Psycho]

That is the correct size , it is 1/8" pipe tread so it is a tapered thread . common fitting size