You are correct about the size - 2.125". It sounds like your supplier sent you an incorrect part, but I have no idea why.
Ray
I have a buick skylark 1966 convertible with the classic 300 CID .
I want the installe a new 180 deg. thermostat because the last owner has remove it !
I order a standard thermostat for my 300 CID and it is too big !?! ( 2.5 inch )
If I check the size, the thermostat for a 225 / 6 cylinder is the right size... ( 2.125 inch )
Why ?
My engine is a 8 cylinder code number ML.
Anybody has an idee ?
( sorry for my english. )
You are correct about the size - 2.125". It sounds like your supplier sent you an incorrect part, but I have no idea why.
Ray
OK Ray,
Very strange because on all website I found always the 2.5 inch reference for my 4.9Liter and never the 2.125 inch.
I remove this afternoon the water outlet and check the hole.
Effectively it is a 2.125 inch !
Thanks again Ray : )
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