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Accelo · 02-21-2024, 11:03 PM

The metal part with the "O" ring is 1.445
The OD of the "O" ring is 1.64"
It has to fit a 1.5" soft plug.

02-21-2024, 11:03 PM	#3
Accelo Registered User Join Date: Mar 2015 Location: washington Posts: 2,177	Re: GM block heater The metal part with the "O" ring is 1.445 The OD of the "O" ring is 1.64" It has to fit a 1.5" soft plug.