Sump plug thread size

[Johnnylad123]

Does anyone know what size thread is on the sump plug? I'm after buying some crush washers but want to avoid taking mine off to find out what it is!

[unfazed]

17mm washers

[Johnnylad123]

Thanks.

[WayneUK]

I think the bolt head is 17mm and the washer is 14mm?

[Johnnylad123]

Mmmm, bit of conjecture here. Even though I don't want to I think the only surefire way is to take it off. 

[red98]

     got the sump off mine at the moment,i`ll finish me tea and go and measure it for you ...

[red98]

sorted...

[unfazed]

Forgot that bit. UPDATE if you ask for 17mm sump washers you will get the 20mm outer with 14mm inner  according to the local motor factors. According to the fellow at the counter it's based  on the cenre diameter of the washer. To honest I thought he was bullshitting. :-)

[Johnnylad123]

Thanks for the clarification chaps!