help finding thread size

[djchickcrx]

Hi,

Have a decat pipe on the crx. It has 2 removable bolts/blanks to allow you to install o2 sensors. One of these bolts/blanks 'removed' itself driving home the last day.

Does anyone know what size thread this would be (i.e. for an o2 sensor)?

[C-Rex]

Think they are a pretty common thread pattern was looking at them for the manifold I have they are all over ebay

[mcd22]

M18 thread.
Easy enough source in local hardwares.

[djchickcrx]

great, will get into tripart during the week!