This GReddy 6mm vacuum nipple fitting is a small OEM-style 1/8" pipe-thread adapter intended for vacuum and boost plumbing tasks. It provides a compact threaded connection point for routing vacuum lines or sensors where a 6mm nipple and 1/8" pipe thread are required, matching common intake and boost control plumbing needs without altering other components.
GReddy 6mm Vacuum Nipple 1/8 Pipe Thread Fitting