Copper washer size ?

[bababoom]

Anyone know what the size of washer is on the water temp sender on the rad?
Don't want to unscrew it yet for obvious reasons.
Cheers

[J400GED]

bababoom said:

Anyone know what the size of washer is on the water temp sender on the rad?
Don't want to unscrew it yet for obvious reasons.
Cheers

On the rad it will be the fan switch (Otter switch). It is not your coolant temp sender!

[Sardonicus]

22 mm crush washer or solid copper both will work fine.

[bababoom]

Great thanks.