5.9L/6.7L 24V Cummins Individual Runner Billet Intake Manifold

Maximum volume for the 24-valve Cummins

Wehrli pairs a large fabricated aluminum plenum with precision CNC-machined, tapered individual runners. The goal is much more airflow and a more even split between all six cylinders than the cast factory intake shelf gives.

It is meant for extreme drag and pulling engines with extensive head work, where high-rpm power and volumetric efficiency matter most.

Who it's for

Builders of competition 24-valve Cummins engines.

Key specs (per Wehrli)

What's included

• Fabricated plenum with CNC-machined tapered runners
• 4 in. V-band steel flange and clamp for custom intercooler piping

Fitment notes

• For 24-valve 5.9L and 6.7L Cummins race engines.
• To install it you will need custom-made injection lines and charge piping, the cast intake shelf machined off the head, and mounting holes drilled and tapped. Wehrli offers a CAD model of the bolt pattern for the machining.

Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.