'71 Mercruiser 165hp I6 oil pressure sender thread size?

[59Thompson]

Hello, Am planning to remove the oil pressure sender and use a mechanical gauge to test the oil pressure. Looking for data on the thread size for the adapter I will need. Thanks in advance for your assistance.

 

[Scott06]

Hello, Am planning to remove the oil pressure sender and use a mechanical gauge to test the oil pressure. Looking for data on the thread size for the adapter I will need. Thanks in advance for your assistance.

Usually they are 1/8” pipe thread. Look inside the gauge you get usually they have a few adapters and bushings to fit different sizes

 

[59Thompson]

Usually they are 1/8” pipe thread. Look inside the gauge you get usually they have a few adapters and bushings to fit different sizes

Tks! Project for tomorrow. I'll post what I learn.