V band Question

[DanGST]

I was trying to see what size v band clamp I need. I measured my holset and it measures to 4 inches. Is that correct? Also, if that is what kind of setup can I use to bolt it on to my o2 housing.

 

[TexasTurbo]

You'd likely want to get the vband clamp from holset or find an aftermarket one that fits. A lot of people use the clamp that comes with the turbo and the elbow then cut the flange off the elbow and weld it to whatever piping they will use for their down pipe/o2 housing crap.