3.9L 4BT Cummins Individual Runner Billet Intake Manifold

The WCFab Billet Individual Runner Intake for 4BT Cummins engines features a massive, custom fabricated aluminum intake plenum and high flow precision CNC machined tapered individual intake runners to provide significantly increased airflow and more balanced distribution to all cylinders. Designed for extreme performance drag racing and pulling engines with extensive cylinder head machining work looking to maximize engine volumetric efficiency and high RPM power output. Requires custom fuel injection lines and intercooler piping, milling off the cast intake shelf, and mounting holes drilled and tapped in the cylinder head for installation.

• Custom Powder Coating Available at Additional Cost - Contact us for Details!
• No Mounting Hardware included
• CAD Model of bolt pattern for cylinder head machining available