Vaccum Ports at the back of the intake manifold
3 x 1/8" NPT
1 x 1/4" NPT
Vaccum Ports at the underneath the intake manifold
3 x 1/8" NPT
1 x 1/4" NPT
This Intake Manifold only comes with 3 x 1/8" to 1/8" (3mm) Barb and 1 x 1/4" to 1/4" (6mm) Barb. Block off plugs must be purhasced separatley for all unused ports.