Hey, does anyone know what size female thread the bottom side of the stock 99-00 Civic fuel filter is? Or what size is the male fitting on the hardline?

I know the top of the filter is a 12mmX1.25 but its too small for the bottom so I'm guessing 14mmx1.25?

I'm planning to use an aftermarket fuel filter but leaving the stock hardlines from the tank to there.

Thanks!

 

same size as your oil pan drain bolts, 18x1.5mm

stan

 

Indeed it is! Thanks Stan!