
- Purpose-Built Fitment: Engineered specifically for all 2006 and newer Cummins engines, this rocker box seamlessly accommodates both 14mm and 9/16" head studs without any modifications. It also provides an additional 1/4" of internal clearance, which is crucial for trucks utilizing aftermarket rocker arms or high-lift valvetrain components.
- Hassle-Free Installation: Designed for your convenience, this rocker box utilizes a standard OEM Cummins rocker box gasket, eliminating any guesswork during installation and ensuring a perfect seal.
- Superior Craftsmanship: Each unit is meticulously precision-machined from 6061 billet aluminum, guaranteeing a crisp aesthetic and consistent fit.
- Proudly Made in the USA: Manufactured in-house at our facility in Woodbury, Tennessee, you can trust in the quality and craftsmanship of a product made right here in the United States.
- What's Included: Each Bean Machine Billet Rocker Box comes complete with one billet aluminum rocker box and six alloy steel socket head screws, providing everything you need for a straightforward installation.

If you own a 2006 or newer 5.9L or 6.7L Cummins engine, the Bean Machine Billet Rocker Box offers a significant upgrade that combines both form and function. This precision-engineered component is designed to provide essential clearance for enhanced engine performance, especially when you're upgrading to larger head studs or aftermarket rocker arms. Beyond its practical benefits, it also delivers a clean, custom look to your engine bay, transforming it into a refined and finished appearance.
Purpose-Built Fitment: Engineered specifically for all 2006 and newer Cummins engines, this rocker box seamlessly accommodates both 14mm and 9/16" head studs without any modifications. It also provides an additional 1/4" of internal clearance, which is crucial for trucks utilizing aftermarket rocker arms or high-lift valvetrain components.
Hassle-Free Installation: Designed for your convenience, this rocker box utilizes a standard OEM Cummins rocker box gasket, eliminating any guesswork during installation and ensuring a perfect seal.
Superior Craftsmanship: Each unit is meticulously precision-machined from 6061 billet aluminum, guaranteeing a crisp aesthetic and consistent fit[...]
- Purpose-Built Fitment: Engineered specifically for all 2006 and newer Cummins engines, this rocker box seamlessly accommodates both 14mm and 9/16" head studs without any modifications. It also provides an additional 1/4" of internal clearance, which is crucial for trucks utilizing aftermarket rocker arms or high-lift valvetrain components.
- Hassle-Free Installation: Designed for your convenience, this rocker box utilizes a standard OEM Cummins rocker box gasket, eliminating any guesswork during installation and ensuring a perfect seal.
- Superior Craftsmanship: Each unit is meticulously precision-machined from 6061 billet aluminum, guaranteeing a crisp aesthetic and consistent fit.
- Proudly Made in the USA: Manufactured in-house at our facility in Woodbury, Tennessee, you can trust in the quality and craftsmanship of a product made right here in the United States.
- What's Included: Each Bean Machine Billet Rocker Box comes complete with one billet aluminum rocker box and six alloy steel socket head screws, providing everything you need for a straightforward installation.