What size thread?

[Tomtheman2]

What size thread is the thread for a glanza v oil filter?

Is it M20 x 1.5mm, M18 x 1.5mm & ¾ UNF16 ?

I want to put one of these in there to run my oil temp and pressure gauges from.... http://cgi.ebay.co.uk/Sandwich-Plate-Adapt...#ht_1067wt_1167

Thanks,

 

[kieran.s gt]

3/4 unf