06 - Current 6.7 Cummins Billet Rocker Box

 06+ Cummins Billet Rocker Box Designed for Clearance. Built for a Clean Look. A simple and effective upgrade for any 2006 and newer Cummins engine. Whether you're installing larger head studs or aftermarket rocker arms, this rocker box provides the additional clearance needed — all while giving your engine bay a refined, finished appearance.  Purpose-Built Fitment Designed to fit all 2006+ Cummins engines, this rocker box works with both 14mm and 9/16" head studs with no modifications required. It also offers an extra ¼" of internal clearance, ideal for trucks running aftermarket rocker arms or high-lift valvetrain components.  Uses OEM Gasket No guesswork during install — this rocker box is designed to use a standard OEM Cummins rocker box gasket, ensuring proper fit and sealing.  Clean Machined Finish Each unit is precision-machined from 6061 billet aluminum for a crisp look and consistent fit. Available in raw billet or anodized finishes, with custom logos or colors available up