治真 3 I feel it comes with very little accessories, as it only comes with 1 set of 10mm in & out. My engine has 2 PCV, one 10mm, and the other is 12mm, so I was lucky installing it on 10mm one, but if not, you may need converter or even change the inlet with different size. And it only comes with 1 set of gasket, so if one goes bad, you will spend whole day look for suitable one at near DIY shops.