Oil pressure sending unit question.

inertia said

A pipe plug, or an extra guage,, usually one was plugged from the factory..

cheers

Click to expand...

Correct, Here's some pictures of a 400 that I have in my garage.

I would use one for the stock oil pressure gauge in the dash and one for an aftermarket mechanical pressure gauge...

View attachment 400 A01 B.jpg

View attachment 400 A02 B.jpg

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View attachment 400 A04 B.jpg