This billet adapter is cut from a 2.5" thick chunk of aluminum. Meant to adapt a HiRam Intercooler, or Sheetmetal Lid, to your TFS-R lower intake manifold. Over 2 hours of material removal in the CNC mill gives you all of the contoured radius'd entries into the runners ensuring there is no air flow restriction. 

Includes (6) 5/16 12pt alloy bolts and Belleville lock washers to secure to your TFS-R intake.