The kit consists of a 3 piece CNC Air-Oil Separator, anodized black, and engraved with the GT1R logo. The AOS is sealed with Viton o-rings and all ports are AN o-ring boss ports. We include a 6AN check valve in the bottom of the AOS to allow oil to drain back and stop crankcase pressure from feeding the AOS from the bottom, where it’s designed to drain. The AOS is mounted to the engine using supplied stainless steel hardware and a CNC aluminum mounting bracket. A complete installation kit is included with pre-assembled lines using Redhorse Products’ black anodized crimp hose ends and black AN hose. Following the supplied instructions, installation can be done in less than 2 hours by a first-time installer with a few basic tools, including the oil drain-back system.