3/8" NPT WITH 1/4" AND 3/8" HOSE NIPPLES. INTAKE MANIFOLD VACUUM "T" FITTING.
Intake Manifold Vacuum T Fitting 3/8" NPT Thread 1/4" & 3/8" Nipple Steel ZINC
GM Intake Manifold Vacuum T Fitting Steel 3/8" NPT 1/4" 3/8" Barb Nipple Ford
Intake Manifold Vacuum T Fitting Tee 3/8" NPT Thread 1/4" & 3/8" Nipple Steel