What size Copper Crush Washer for F650GS Coolant?

[philiptigerrice]

Hi - asking for my brother - as above really - he knows he needs a Crush Washer on the Coolant drain screw of the water pump on his F650GS, but doesn't know what the size is - can anyone help?



Ta



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[Dansin]

M6x10 if you mean this one - Part 3 - http://www.realoem.com/bmw/enUS/sho...W-F_650_GS_Dakar_04_0176,0186_&diagId=11_2932