CB performance air filters

[AxlFoley]

I have a set of these air filters but I’m missing two lengths of threaded bar to attach the top, I can’t figure out the thread type, just wondering if anyone knows it?

Thanks

Mark

 

[sparkywig]

Sorry, no I don't. But I can tell you it's definitely not metric.
I'd be tempted to rethread the base and fit some M4/M5 threaded rod, at least you'll be able to get some fasteners that fit.

 

[K@rlos]

Sorry, no I don't. But I can tell you it's definitely not metric.
I'd be tempted to rethread the base and fit some M4/M5 threaded rod, at least you'll be able to get some fasteners that fit.

^^^^^ this! it’s some god forsaken UNC thread, don’t know why the yanks can’t just use Metric like everyone else in the developed world, especially when building parts for European vehicles which are metric! drill & tap it for an m5 heli-coil then get some studding & wing nuts to suit

 

[AxlFoley]

I feel you have both been there

Thanks both will do.