ProMaxx Replacement Cylinder Head wheel-&-tires Stock intake boxes are a

Stock intake boxes are a significant contributor to poor air flow which is why S&B designs custom air boxes with secondary and/or enlarged openings

For use w/ Ram-Air System: 2014-2015 Chevy/GMC-Diesel/Gas

this system is the budget-friendly choice that doesn’t compromise on quality

Featuring a 3" inlet and 3

ProMaxx Replacement Cylinder Head wheel-&-tires Stock intake boxes are aProMaxx Performance Cylinder Heads are designed as replacement cylinder heads with thicker castings in crack prone areas. Sold as a complete cylinder head with valves, valve seals, springs, retainers and locks, these new castings are sold without a core charge and come ready to install. Sold individually. Features: New Casting Improved Casting In "Problem Areas" Includes Valve Seals, Springs No Core Charge! Sold Individually Note: The standard heads