Oil filter housing tapping point size

[bobfather]

Does anyone know the thread size for this tapping. I'm copying this one I found on Google, fitting an 1/8"npt temperature sender and would like to purchase a reducer prior to starting this job

Edited by bobfather on Monday 20th March 18:47

[Discopotatoes]

1/2 ntp springs to mind, but id double check it

Edited by Discopotatoes on Monday 20th March 20:09

[phillpot]

If the brass sender unit is 1/8 my guess would be next size up, 1/4?

[Discopotatoes]

phillpot said:

If the brass sender unit is 1/8 my guess would be next size up, 1/4?

The pressure switch is bigger than 1/8, the gauge sender is 1/8

[bobfather]

phillpot said:

If the brass sender unit is 1/8 my guess would be next size up, 1/4?

Looks bigger than 1/4 to me. The back story for the photo says thats an 1/8 npt temperaturs sender, the same as I'm trying to fit

[phillpot]

I'm confused, are you saying this (yellow arrow) is 1/8 or 1/4 (looks 1/8 to me)?


Either way red arrow looks like next size up, so 3/8 if it is 1/4?

[bobfather]

The yellow is 1/8" npt. I need a reducer the same as the one in the photo but I don't know the size of the socket in the oil filter housing

[Sardonicus]

M20 x 1.5 IIRC

[carsy]

Sardonicus said:

M20 x 1.5 IIRC

[bobfather]

Thanks for the advice, I was hoping that both would be pipe threads but M20 1.5 to 1/8"NPT is available, better known as a sump plug adapter. I shall make a purchase


Sump plug adapter