
Air Filter Inlet Adapter/ Velocity Stack 3 in Velocity Stack is an intake inlet adapter/velocity-stack component designed to create a smoother transition as air enters a filter or intake tube. A radiused entry helps reduce the abrupt edge at the inlet, giving incoming air a cleaner path into the tube—an important detail in a custom high-flow intake.
Use the listed diameter to match the surrounding filter and tubing. This is a fabrication component, so final performance depends on the complete intake layout, filter placement and engine combination.