370z ISR Performance Aluminum BOV Modular Flange Kit - HKS Style BOV's

ISR Performance Aluminum Modular BOV Flange - HKS Style BOV's. ISR Performance Modular Aluminum HKS Style Blow Off Valve Flange.

This flange is designed in 2 pieces. The bottom portion can be unscrewed, and welded to the pipe. Then the top piece can be threaded on. This makes for ease of welding and also give you the ability to switch between HKS or Greddy Style BOV's without rewelding.