Does anyone know what the port size is for the oil pressure sensor, on a 1997 RAM1500 with 360?

Hoping it is 1/8" or 1/4" NPT.

it won't be 1/8", that too small. i think 1/4 is probably too small, more like 3/8 - 1/2", unless someone's got a block or an old one to measure, you might be best off to stop by a parts store and measure one..

Thanks for reply. I am looking to add a by-pass oil filter, and would like to get only the fittings I need. Not a bag full of unneeded fittings leftover.

It's 1/8" NPT...

oops. my bad. i was just thinking thread size. brain fart.
1/8" NPT = .36 thread size.
http://www.eldonjames.com/frames/thread.html

Thanks for the info.