Radium Engineering AOS-R - Universal VTA (Vent to Atmosphere) Mazda-RX-7-FC3S-1990 rail kit and OEM manifold

rail kit and OEM manifold for illustration purposes only

2x top ports: 6AN ORB (9/16"-18) for tight upper engine clearance

The HRB RB Engine Build Tool Kit is engineered to eliminate the common frustrations faced during RB engine assembly

Mt Holes Cnt To Cnt (mm):    110

Radium Engineering AOS-R - Universal VTA (Vent to Atmosphere) Mazda-RX-7-FC3S-1990 rail kit and OEM manifoldRadium Engineering AOS R Universal VTA The Radium Engineering AOS R (Air Oil Separator Recirculating) is a precision engineered crankcase ventilation solution designed to separate oil vapors and contaminants from crankcase gases before they enter the atmosphere. This universal VTA (Vent to Atmosphere) configuration features advanced internal baffling, CNC machined construction, and a compact design suitable for a wide range of applications where clean